🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 40 (from laksa177)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa040.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.w3schools.com/c/c_operators.php\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.w3schools.com/c/c_operators.php\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.w3schools.com\/c\/c_operators.php","crawl_time":1775325223,"first_indexed_time":1644328690,"http_code":200,"src_unparsed":"com,w3schools!www,\/c\/c_operators.php s443","src_root_hash":"10756103332767711440","history_drop_reason":null,"meta_title":"C Operators","meta_descriptions":["Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML."],"attrs_boilerpipe_text":"C\nOperators\nOperators\nOperators are used to perform operations on variables and values.\nIn the example below, we use the\n+\noperator\nto add together two values:\nAlthough the\n+\noperator is often used to add together two values, like in the example above, it can also be used to add together a variable and a value, or a variable and another variable:\nExample\nint\nsum1 =\n100\n+\n50\n;       \nint\nsum2 = sum1 +\n250\n;     \nint\nsum3 = sum2 + sum2;    \nTry it Yourself »\nC divides the operators into the following groups:\nArithmetic operators\nAssignment operators\nComparison operators\nLogical operators\nBitwise operators\n(advanced)","attrs_markdown":"[Tutorials](\"Tutorials and References\")   [References](\"References\")   [Exercises](\"Exercises and Quizzes\")   [Certificates](\"Certificates\")\n\n[Menu](\"Menu\")\n\nSearch field\n\n*×*\n\n[See More]()\n\nSign In\n\n[★ +1](https:\/\/profile.w3schools.com\/log-in?redirect_url=https%3A%2F%2Fwww.w3schools.com%2Fc%2Fc_operators.php \"Your W3Schools Profile\")\n\n[Get Certified](https:\/\/campus.w3schools.com\/collections\/course-catalog \"W3Schools Certificates\")\n\n[Upgrade](https:\/\/order.w3schools.com\/plans \"Become a PLUS user and unlock powerful features\")\n\n[Teachers](https:\/\/www.w3schools.com\/academy\/index.php \"Contact us about W3Schools Academy for educational institutions\")\n\n[Spaces](https:\/\/www.w3schools.com\/spaces\/index.php \"Get Your Own Website With W3Schools 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ASP](https:\/\/www.w3schools.com\/asp\/default.asp \"ASP Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/asp\/default.asp \"ASP Tutorial\")   [Reference](https:\/\/www.w3schools.com\/asp\/asp_ref_vbscript_functions.asp \"ASP Reference\")\n\n[Learn Node.js](https:\/\/www.w3schools.com\/nodejs\/default.asp \"Node.js Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/nodejs\/default.asp \"Node.js Tutorial\")   [Reference](https:\/\/www.w3schools.com\/nodejs\/ref_modules.asp \"Node.js Reference\")\n\n[Learn Raspberry Pi](https:\/\/www.w3schools.com\/nodejs\/nodejs_raspberrypi.asp \"Raspberry Pi Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/nodejs\/nodejs_raspberrypi.asp \"Raspberry Pi Tutorial\")\n\n[Learn Swift](https:\/\/www.w3schools.com\/swift\/default.asp \"Swift Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/swift\/default.asp \"Swift Tutorial\")\n\n[Learn Git](https:\/\/www.w3schools.com\/git\/default.asp \"Git Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/git\/default.asp \"Git Tutorial\")\n\n[Learn Bash](https:\/\/www.w3schools.com\/bash\/index.php \"Bash Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/bash\/index.php \"Bash Tutorial\")\n\n[Learn MongoDB](https:\/\/www.w3schools.com\/mongodb\/index.php \"MongoDB Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/mongodb\/index.php \"MongoDB Tutorial\")\n\n[Learn AWS Cloud](https:\/\/www.w3schools.com\/aws\/index.php \"AWS Cloud Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/aws\/index.php \"AWS Cloud Tutorial\")\n\n[Learn XML](https:\/\/www.w3schools.com\/xml\/default.asp \"XML Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/xml\/default.asp \"XML Tutorial\")   [Reference](https:\/\/www.w3schools.com\/xml\/dom_nodetype.asp \"XML Reference\")\n\n### Data Analytics\n[Learn AI](https:\/\/www.w3schools.com\/ai\/default.asp \"Artificial Intelligence Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/ai\/default.asp \"Artificial Intelligence Tutorial\")\n\n[Learn Generative AI](https:\/\/www.w3schools.com\/gen_ai\/index.php \"Generative AI Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/gen_ai\/index.php \"Generative AI Tutorial\")\n\n[Learn ChatGPT-3.5](https:\/\/www.w3schools.com\/gen_ai\/chatgpt-3-5\/index.php \"ChatGPT-3.5 Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/gen_ai\/chatgpt-3-5\/index.php \"ChatGPT-3.5  Tutorial\")\n\n[Learn ChatGPT-4](https:\/\/www.w3schools.com\/gen_ai\/chatgpt-4\/index.php \"ChatGPT-4 Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/gen_ai\/chatgpt-4\/index.php \"ChatGPT-4 Tutorial\")\n\n[Learn Google Bard](https:\/\/www.w3schools.com\/gen_ai\/bard\/index.php \"Google Bard Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/gen_ai\/bard\/index.php \"Google Bard Tutorial\")\n\n[Learn Machine Learning](https:\/\/www.w3schools.com\/python\/python_ml_getting_started.asp \"Machine Learning Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/python\/python_ml_getting_started.asp \"Machine Learning Tutorial\")\n\n[Learn DSA](https:\/\/www.w3schools.com\/dsa\/index.php \"DSA - Data Structures and Algorithms\")   [Tutorial](https:\/\/www.w3schools.com\/dsa\/index.php \"DSA - Data Structures and Algorithms \")\n\n[Learn Data Science](https:\/\/www.w3schools.com\/datascience\/default.asp \"Data Science Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/datascience\/default.asp \"Data Science Tutorial\")\n\n[Learn NumPy](https:\/\/www.w3schools.com\/python\/numpy\/default.asp \"NumPy Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/python\/numpy\/default.asp \"NumPy Tutorial\")\n\n[Learn Pandas](https:\/\/www.w3schools.com\/python\/pandas\/default.asp \"Pandas Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/python\/pandas\/default.asp \"Pandas Tutorial\")\n\n[Learn SciPy](https:\/\/www.w3schools.com\/python\/scipy\/index.php \"SciPy Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/python\/scipy\/index.php \"SciPy Tutorial\")\n\n[Learn Matplotlib](https:\/\/www.w3schools.com\/python\/matplotlib_intro.asp \"Matplotlib Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/python\/matplotlib_intro.asp \"Matplotlib Tutorial\")\n\n[Learn Statistics](https:\/\/www.w3schools.com\/statistics\/index.php \"Statistics Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/statistics\/index.php \"Statistics Tutorial\")\n\n[Learn Excel](https:\/\/www.w3schools.com\/excel\/index.php \"Excel Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/excel\/index.php \"Excel Tutorial\")\n\n[Learn Google Sheets](https:\/\/www.w3schools.com\/googlesheets\/index.php \"Google Sheets Tutorial\")   [Tutorial](https:\/\/www.w3schools.com\/googlesheets\/index.php \"Google Sheets Tutorial\")\n\n### Web Building\n[Create a Website](https:\/\/www.w3schools.com\/spaces\/index.php \"Get Your Own Website With W3schools Spaces\")\n\n[Create a Server NEW](https:\/\/www.w3schools.com\/spaces\/index.php \"Get Your Own Server With W3schools Spaces\")\n\n[Where To Start](https:\/\/www.w3schools.com\/where_to_start.asp \"Where To Start - Web Development\")\n\n[Web Templates](https:\/\/www.w3schools.com\/w3css\/w3css_templates.asp \"Free Web Templates\")\n\n[Web Statistics](https:\/\/www.w3schools.com\/browsers\/default.asp \"Web Statistics\")\n\n[Web Certificates](https:\/\/campus.w3schools.com\/ \"Certificates\")\n\n[Web Development](https:\/\/www.w3schools.com\/whatis\/default.asp \"Web Development Roadmaps\")\n\n[Introduction to Programming](https:\/\/www.w3schools.com\/programming\/index.php \"Introduction to Programming\")\n\n[Introduction to HTML & CSS](https:\/\/www.w3schools.com\/htmlcss\/default.asp \"HTML & CSS\")\n\n[Code Editor](https:\/\/www.w3schools.com\/tryit\/default.asp \"Try it - Code Editor\")\n\n[Test Your Typing Speed](https:\/\/www.w3schools.com\/typingspeed\/default.asp \"Test Your Typing Speed\")\n\n[Play a Code Game](https:\/\/www.w3schools.com\/codegame\/index.html \"Play a Code Game\")\n\n[Web Developer Tools](https:\/\/www.w3schools.com\/tools\/index.php \"Web Developer Tools\")\n\n[Cyber Security](https:\/\/www.w3schools.com\/cybersecurity\/index.php \"Cyber Security Tutorial\")\n\n[Accessibility](https:\/\/www.w3schools.com\/accessibility\/index.php \"Accessibility Security Tutorial\")\n\n[Join our Newsletter](https:\/\/campus.w3schools.com\/pages\/newsletter \"W3Schools Newsletter\")\n\n×\n\n## **References**\nReferences filter input\n\n×\n\n### HTML and CSS\n[HTML Tags Reference](https:\/\/www.w3schools.com\/tags\/default.asp \"HTML Tag Reference\")\n\n[CSS Reference](https:\/\/www.w3schools.com\/cssref\/default.asp \"CSS Reference\")\n\n[W3.CSS Reference](https:\/\/www.w3schools.com\/w3css\/w3css_references.asp \"W3.CSS Reference\")\n\n[Bootstrap 3 Reference](https:\/\/www.w3schools.com\/bootstrap\/bootstrap_ref_all_classes.asp \"Bootstrap3 Reference\")\n\n[Bootstrap 4 Reference](https:\/\/www.w3schools.com\/bootstrap4\/bootstrap_ref_all_classes.asp \"Bootstrap4 Reference\")\n\n[Color Names](https:\/\/www.w3schools.com\/colors\/colors_names.asp \"Color Names\")\n\n[Icons Reference](https:\/\/www.w3schools.com\/icons\/default.asp \"Icons Reference\")\n\n[SVG Reference](https:\/\/www.w3schools.com\/graphics\/svg_reference.asp \"SVG Reference\")\n\n[Canvas Reference](https:\/\/www.w3schools.com\/graphics\/canvas_reference.asp \"Canvas Reference\")\n\n[Sass Reference](https:\/\/www.w3schools.com\/sass\/sass_functions_string.php \"SASS Reference\")\n\n[UTF-8 Charset Reference](https:\/\/www.w3schools.com\/charsets\/default.asp \"UTF-8 Reference\")\n\n[UTF-8 Emojis Reference](https:\/\/www.w3schools.com\/charsets\/ref_emoji_smileys.asp \"UTF-8 Emojis Reference\")\n\n### JavaScript\n[JavaScript Reference](https:\/\/www.w3schools.com\/jsref\/default.asp \"JavaScript Reference\")\n\n[HTML DOM Reference](https:\/\/www.w3schools.com\/jsref\/dom_obj_document.asp \"HTML DOM Reference\")\n\n[jQuery Reference](https:\/\/www.w3schools.com\/jquery\/jquery_ref_overview.asp \"jQuery Reference\")\n\n[Vue Reference](https:\/\/www.w3schools.com\/vue\/vue_ref_builtin-attributes.php \"Vue Reference\")\n\n[Angular Reference](https:\/\/www.w3schools.com\/angular\/angularjs_ref_directives.asp \"Angular Reference\")\n\n[JSON Reference](https:\/\/www.w3schools.com\/jsref\/jsref_obj_json.asp \"JSON Reference\")\n\n[AppML Reference](https:\/\/www.w3schools.com\/appml\/appml_reference.asp \"AppML Reference\")\n\n[W3.JS Reference](https:\/\/www.w3schools.com\/e3js\/w3js_references.asp \"W3.JS Reference\")\n\n### Backend\n[Python Reference](https:\/\/www.w3schools.com\/python\/python_reference.asp \"Python Reference\")\n\n[SQL Reference](https:\/\/www.w3schools.com\/sql\/sql_ref_keywords.asp \"SQL Reference\")\n\n[MySQL Reference](https:\/\/www.w3schools.com\/mysql\/mysql_datatypes.asp \"MySQL Reference\")\n\n[PHP Reference](https:\/\/www.w3schools.com\/php\/php_ref_overview.asp \"PHP Reference\")\n\n[Java Reference](https:\/\/www.w3schools.com\/java\/java_ref_reference.asp \"Java Reference\")\n\n[C Reference](https:\/\/www.w3schools.com\/c\/c_ref_reference.php \"C Reference\")\n\n[C++ Reference](https:\/\/www.w3schools.com\/cpp\/cpp_ref_reference.asp \"C++ Reference\")\n\n[Django Reference](https:\/\/www.w3schools.com\/django\/django_ref_template_tags.php \"Django Reference\")\n\n[ASP Reference](https:\/\/www.w3schools.com\/asp\/asp_ref_vbscript_functions.asp \"ASP Reference\")\n\n[Node.js Reference](https:\/\/www.w3schools.com\/nodejs\/ref_modules.asp \"Node.js Reference\")\n\n[XML Reference](https:\/\/www.w3schools.com\/xml\/dom_nodetype.asp \"XML Reference\")\n\n×\n\n## **Exercises**\nExcercises filter input\n\n×\n\n### HTML and CSS\n[HTML](https:\/\/www.w3schools.com\/html\/html_exercises.asp \"HTML Exercises\")   [Exercise](https:\/\/www.w3schools.com\/html\/html_exercises.asp \"HTML Exercises\")   [Quiz](https:\/\/www.w3schools.com\/html\/html_quiz.asp \"HTML Quizzes\")   [Challenge](https:\/\/www.w3schools.com\/html\/html_challenges.asp \"HTML Code Challenges\")\n\n[CSS](https:\/\/www.w3schools.com\/css\/css_exercises.asp \"CSS Exercises\")   [Exercise](https:\/\/www.w3schools.com\/css\/css_exercises.asp \"CSS Exercises\")   [Quiz](https:\/\/www.w3schools.com\/css\/css_quiz.asp \"CSS Quizzes\")   [Challenge](https:\/\/www.w3schools.com\/css\/css_challenges.asp \"CSS Code Challenges\")\n\n[Bootstrap 3](https:\/\/www.w3schools.com\/bootstrap\/bootstrap_exercises.asp \"Bootstrap 3 Exercises\")   [Exercise](https:\/\/www.w3schools.com\/bootstrap\/bootstrap_exercises.asp \"Bootstrap 3 Exercises\")   [Quiz](https:\/\/www.w3schools.com\/bootstrap\/bootstrap_quiz.asp \"Bootstrap 3 Quizzes\")\n\n[Bootstrap 4](https:\/\/www.w3schools.com\/bootstrap4\/bootstrap_exercises.asp \"Bootstrap 4 Exercises\")   [Exercise](https:\/\/www.w3schools.com\/bootstrap4\/bootstrap_exercises.asp \"Bootstrap 4 Exercises\")   [Quiz](https:\/\/www.w3schools.com\/bootstrap4\/bootstrap_quiz.asp \"Bootstrap 4 Quizzes\")\n\n[Bootstrap 5](https:\/\/www.w3schools.com\/bootstrap5\/bootstrap_exercises.php \"Bootstrap 5 Exercises\")   [Exercise](https:\/\/www.w3schools.com\/bootstrap5\/bootstrap_exercises.php \"Bootstrap 5 Exercises\")   [Quiz](https:\/\/www.w3schools.com\/bootstrap5\/bootstrap_quiz.php \"Bootstrap 5 Quizzes\")\n\n### Data Analytics\n[DSA](https:\/\/www.w3schools.com\/dsa\/dsa_exercises.php \"DSA Exercises\")   [Exercise](https:\/\/www.w3schools.com\/dsa\/dsa_exercises.php \"DSA Exercises\")   [Quiz](https:\/\/www.w3schools.com\/dsa\/dsa_quiz.php \"DSA Quizzes\")\n\n[NumPy](https:\/\/www.w3schools.com\/python\/numpy\/numpy_exercises.asp \"NumPy Exercises\")   [Exercise](https:\/\/www.w3schools.com\/python\/numpy\/numpy_exercises.asp \"NumPy Exercises\")   [Quiz](https:\/\/www.w3schools.com\/python\/numpy\/numpy_quiz.asp \"NumPy Quizzes\")\n\n[Pandas](https:\/\/www.w3schools.com\/python\/pandas\/pandas_exercises.asp \"Pandas Exercises\")   [Exercise](https:\/\/www.w3schools.com\/python\/pandas\/pandas_exercises.asp \"Pandas Exercises\")   [Quiz](https:\/\/www.w3schools.com\/python\/pandas\/pandas_quiz.asp \"Pandas Quizzes\")\n\n[SciPy](https:\/\/www.w3schools.com\/python\/scipy\/scipy_exercises.php \"SciPy Exercises\")   [Exercise](https:\/\/www.w3schools.com\/python\/scipy\/scipy_exercises.php \"SciPy Exercises\")   [Quiz](https:\/\/www.w3schools.com\/python\/scipy\/scipy_quiz.php \"SciPy Quizzes\")\n\n[Excel](https:\/\/www.w3schools.com\/excel\/excel_exercises.php \"Excel Exercises\")   [Exercise](https:\/\/www.w3schools.com\/excel\/excel_exercises.php \"Excel Exercises\")\n\n[What is an Exercise?](https:\/\/www.w3schools.com\/exercises\/index.php \"W3Schools Exercises\")   [What is a Quiz?](https:\/\/www.w3schools.com\/quiztest\/default.asp \"W3Schools Quizzes\")   [What is a Challenge?](https:\/\/www.w3schools.com\/challenges\/index.php \"W3Schools Challenges\")\n\n### JavaScript\n[JavaScript](https:\/\/www.w3schools.com\/js\/js_exercises.asp \"JavaScript Exercises\")   [Exercise](https:\/\/www.w3schools.com\/js\/js_exercises.asp \"JavaScript Exercises\")   [Quiz](https:\/\/www.w3schools.com\/js\/js_quiz.asp \"JavaScript Quizzes\")\n\n[React](https:\/\/www.w3schools.com\/react\/react_exercises.asp \"React Exercises\")   [Exercise](https:\/\/www.w3schools.com\/react\/react_exercises.asp \"React Exercises\")   [Quiz](https:\/\/www.w3schools.com\/react\/react_quiz.asp \"React Quizzes\")\n\n[jQuery](https:\/\/www.w3schools.com\/jquery\/jquery_exercises.asp \"jQuery Exercises\")   [Exercise](https:\/\/www.w3schools.com\/jquery\/jquery_exercises.asp \"jQuery Exercises\")   [Quiz](https:\/\/www.w3schools.com\/jquery\/jquery_quiz.asp \"jQuery Quizzes\")\n\n[Vue](https:\/\/www.w3schools.com\/vue\/vue_exercises.php \"Vue Exercises\")   [Exercise](https:\/\/www.w3schools.com\/vue\/vue_exercises.php \"Vue Exercises\")   [Quiz](https:\/\/www.w3schools.com\/vue\/vue_quiz.php \"Vue Quizzes\")\n\n[Angular](https:\/\/www.w3schools.com\/angular\/angular_exercises.asp \"Angular Exercises\")   [Exercise](https:\/\/www.w3schools.com\/angular\/angular_exercises.asp \"Angular Exercises\")   [Quiz](https:\/\/www.w3schools.com\/angular\/angular_quiz.asp \"Angular Quizzes\")\n\n### Backend\n[Python](https:\/\/www.w3schools.com\/python\/python_exercises.asp \"Python Exercises\")   [Exercise](https:\/\/www.w3schools.com\/python\/python_exercises.asp \"Python Exercises\")   [Quiz](https:\/\/www.w3schools.com\/python\/python_quiz.asp \"Python Quizzes\")   [Challenge](https:\/\/www.w3schools.com\/python\/python_challenges.asp \"Python Code Challenges\")\n\n[SQL](https:\/\/www.w3schools.com\/sql\/sql_exercises.asp \"SQL Exercises\")   [Exercise](https:\/\/www.w3schools.com\/sql\/sql_exercises.asp \"SQL Exercises\")   [Quiz](https:\/\/www.w3schools.com\/sql\/sql_quiz.asp \"SQL Quizzes\")\n\n[MySQL](https:\/\/www.w3schools.com\/mysql\/mysql_exercises.asp \"MySQL Exercises\")   [Exercise](https:\/\/www.w3schools.com\/mysql\/mysql_exercises.asp \"MySQL Exercises\")   [Quiz](https:\/\/www.w3schools.com\/mysql\/mysql_quiz.asp \"MySQL Quizzes\")\n\n[PHP](https:\/\/www.w3schools.com\/php\/php_exercises.asp \"PHP Exercises\")   [Exercise](https:\/\/www.w3schools.com\/php\/php_exercises.asp \"PHP Exercises\")   [Quiz](https:\/\/www.w3schools.com\/php\/php_quiz.asp \"PHP Quizzes\")\n\n[Java](https:\/\/www.w3schools.com\/java\/java_exercises.asp \"Java Exercises\")   [Exercise](https:\/\/www.w3schools.com\/java\/java_exercises.asp \"Java Exercises\")   [Quiz](https:\/\/www.w3schools.com\/java\/java_quiz.asp \"Java Quizzes\")   [Challenge](https:\/\/www.w3schools.com\/java\/java_challenges.asp \"Java Code Challenges\")\n\n[C](https:\/\/www.w3schools.com\/c\/c_exercises.php \"C Exercises\")   [Exercise](https:\/\/www.w3schools.com\/c\/c_exercises.php \"C Exercises\")   [Quiz](https:\/\/www.w3schools.com\/c\/c_quiz.php \"C Quizzes\")   [Challenge](https:\/\/www.w3schools.com\/c\/c_challenges.php \"C Challenges\")\n\n[C++](https:\/\/www.w3schools.com\/cpp\/cpp_exercises.asp \"C++ Exercises\")   [Exercise](https:\/\/www.w3schools.com\/cpp\/cpp_exercises.asp \"C++ Exercises\")   [Quiz](https:\/\/www.w3schools.com\/cpp\/cpp_quiz.asp \"C++ Quizzes\")   [Challenge](https:\/\/www.w3schools.com\/cpp\/cpp_challenges.asp \"C++ Code Challenges\")\n\n[C\\#](https:\/\/www.w3schools.com\/cs\/cs_exercises.php \"C# Exercises\")   [Exercise](https:\/\/www.w3schools.com\/cs\/cs_exercises.php \"C# Exercises\")   [Quiz](https:\/\/www.w3schools.com\/cs\/cs_quiz.php \"C# Quizzes\")\n\n[R](https:\/\/www.w3schools.com\/r\/r_exercises.asp \"R Exercises\")   [Exercise](https:\/\/www.w3schools.com\/r\/r_exercises.asp \"R Exercises\")   [Quiz](https:\/\/www.w3schools.com\/r\/r_quiz.asp \"R Quizzes\")\n\n[Kotlin](https:\/\/www.w3schools.com\/kotlin\/kotlin_exercises.php \"Kotlin Exercises\")   [Exercise](https:\/\/www.w3schools.com\/kotlin\/kotlin_exercises.php \"Kotlin Exercises\")   [Quiz](https:\/\/www.w3schools.com\/kotlin\/kotlin_quiz.php \"Kotlin Quizzes\")\n\n[Django](https:\/\/www.w3schools.com\/django\/django_exercises.php \"Django Exercises\")   [Exercise](https:\/\/www.w3schools.com\/django\/django_exercises.php \"Django Exercises\")   [Quiz](https:\/\/www.w3schools.com\/django\/django_quiz.php \"Django Quizzes\")\n\n[Node.js](https:\/\/www.w3schools.com\/nodejs\/nodejs_exercises.asp \"Node.js Exercises\")   [Exercise](https:\/\/www.w3schools.com\/nodejs\/nodejs_exercises.asp \"Node.js Exercises\")   [Quiz](https:\/\/www.w3schools.com\/nodejs\/nodejs_quiz.asp \"Node.js Quizzes\")\n\n[PostgreSQL](https:\/\/www.w3schools.com\/postgresql\/postgresql_exercises.php \"PostgreSQL Exercises\")   [Exercise](https:\/\/www.w3schools.com\/postgresql\/postgresql_exercises.php \"PostgreSQL Exercises\")   [Quiz](https:\/\/www.w3schools.com\/postgresql\/postgresql_quiz.php \"PostgreSQL Quizzes\")\n\n[TypeScript](https:\/\/www.w3schools.com\/typescript\/typescript_exercises.php \"TypeScript Exercises\")   [Exercise](https:\/\/www.w3schools.com\/typescript\/typescript_exercises.php \"TypeScript Exercises\")   [Quiz](https:\/\/www.w3schools.com\/typescript\/typescript_quiz.php \"TypeScript Quizzes\")\n\n[Git](https:\/\/www.w3schools.com\/git\/git_exercises.asp \"Git Exercises\")   [Exercise](https:\/\/www.w3schools.com\/git\/git_exercises.asp \"Git Exercises\")   [Quiz](https:\/\/www.w3schools.com\/git\/git_quiz.asp \"Git Quizzes\")\n\n[Bash](https:\/\/www.w3schools.com\/bash\/bash_exercises.php \"Bash Exercises\")   [Exercise](https:\/\/www.w3schools.com\/bash\/bash_exercises.php \"Bash Exercises\")   [Quiz](https:\/\/www.w3schools.com\/bash\/bash_quiz.php \"Bash Quizzes\")\n\n[Go](https:\/\/www.w3schools.com\/go\/go_exercises.php \"Go Exercises\")   [Exercise](https:\/\/www.w3schools.com\/go\/go_exercises.php \"Go Exercises\")\n\n[MongoDB](https:\/\/www.w3schools.com\/mongodb\/mongodb_exercises.php \"MongoDB Exercises\")   [Exercise](https:\/\/www.w3schools.com\/mongodb\/mongodb_exercises.php \"MongoDB Exercises\")\n\n### Data Analytics\n[DSA](https:\/\/www.w3schools.com\/dsa\/dsa_exercises.php \"DSA Exercises\")   [Exercise](https:\/\/www.w3schools.com\/dsa\/dsa_exercises.php \"DSA Exercises\")   [Quiz](https:\/\/www.w3schools.com\/dsa\/dsa_quiz.php \"DSA Quizzes\")\n\n[NumPy](https:\/\/www.w3schools.com\/python\/numpy\/numpy_exercises.asp \"NumPy Exercises\")   [Exercise](https:\/\/www.w3schools.com\/python\/numpy\/numpy_exercises.asp \"NumPy Exercises\")   [Quiz](https:\/\/www.w3schools.com\/python\/numpy\/numpy_quiz.asp \"NumPy Quizzes\")\n\n[Pandas](https:\/\/www.w3schools.com\/python\/pandas\/pandas_exercises.asp \"Pandas Exercises\")   [Exercise](https:\/\/www.w3schools.com\/python\/pandas\/pandas_exercises.asp \"Pandas Exercises\")   [Quiz](https:\/\/www.w3schools.com\/python\/pandas\/pandas_quiz.asp \"Pandas Quizzes\")\n\n[SciPy](https:\/\/www.w3schools.com\/python\/scipy\/scipy_exercises.php \"SciPy Exercises\")   [Exercise](https:\/\/www.w3schools.com\/python\/scipy\/scipy_exercises.php \"SciPy Exercises\")   [Quiz](https:\/\/www.w3schools.com\/python\/scipy\/scipy_quiz.php \"SciPy Quizzes\")\n\n[Excel](https:\/\/www.w3schools.com\/excel\/excel_exercises.php \"Excel Exercises\")   [Exercise](https:\/\/www.w3schools.com\/excel\/excel_exercises.php \"Excel Exercises\")\n\n[What is an Exercise?](https:\/\/www.w3schools.com\/exercises\/index.php \"W3Schools Exercises\")   [What is a Quiz?](https:\/\/www.w3schools.com\/quiztest\/default.asp \"W3Schools Quizzes\")   [What is a Code Challenge?](https:\/\/www.w3schools.com\/challenges\/index.php \"W3Schools Code Challenges\")\n\n×\n\n## **Certificates**\nFilter field for certifications\n\n×\n\n### HTML and CSS\n[HTML](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/html-certificate \"HTML Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/html-certificate \"HTML Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/html-course \"Paid HTML Course\")   [Bootcamp](https:\/\/www.w3schools.com\/bootcamp\/html-css.php \"HTML Bootcamp\")\n\n[CSS](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/css-certificate \"CSS Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/css-certificate \"CSS Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/css-course \"Paid CSS Course\")   [Bootcamp](https:\/\/www.w3schools.com\/bootcamp\/html-css.php \"CSS Bootcamp\")\n\n[Bootstrap 3](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/bootstrap-3-certificate \"Bootstrap 3 Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/bootstrap-3-certificate \"Bootstrap 3 Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/single-courses\/products\/bootstrap-course \"Paid Bootstrap 3 Course\")\n\n[Bootstrap 4](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/bootstrap-4-certificate \"Bootstrap 4 Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/bootstrap-4-certificate \"Bootstrap 4 Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/single-courses\/products\/bootstrap-4-course \"Paid Bootstrap 4 Course\")\n\n[Bootstrap 5](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/bootstrap-5-certificate \"Bootstrap 5 Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/bootstrap-5-certificate \"Bootstrap 5 Certification Exam\")\n\n### Data Analytics\n[DSA](https:\/\/campus.w3schools.com\/products\/dsa-certification-exam \"DSA Certificate Exam\")   [Certificate](https:\/\/campus.w3schools.com\/products\/dsa-certification-exam \"DSA Certificate Exam\")\n\n[Data Analytics](https:\/\/campus.w3schools.com\/products\/data-analytics-program \"Paid Data Analytics Course\")   [Course](https:\/\/campus.w3schools.com\/products\/data-analytics-program \"Paid Data Analytics Course\")\n\n[NumPy](https:\/\/campus.w3schools.com\/products\/numpy-certification-exam \"NumPy Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/products\/numpy-certification-exam \"NumPy Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/products\/numpy-course \"Paid NumPy Course\")\n\n[Pandas](https:\/\/campus.w3schools.com\/products\/pandas-certification-exam \"Pandas Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/products\/pandas-certification-exam \"Pandas Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/products\/pandas-course \"Paid Pandas Course\")\n\n[Excel](https:\/\/campus.w3schools.com\/products\/excel-certificate \"Excel Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/products\/excel-certificate \"Excel Certification Exam\")\n\n[Social Media](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/social-media-marketing-course \"Paid Social Media Course\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/social-media-marketing-course \"Paid Social Media Course\")\n\n[What is a Certificate?](https:\/\/campus.w3schools.com\/ \"W3Schools Campus\")\n\n[What is a Bootcamp?](https:\/\/www.w3schools.com\/bootcamp\/index.php \"W3Schools Bootcamps\")\n\n### Programs\n[Full Access Best Value\\!](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/w3schools-full-access-course \"Paid Full Access Course\")\n\n[Front End](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/front-end-course \"Paid Front End Course\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/front-end-certificate \"Front End Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/front-end-course \"Paid Front End Development Course\")\n\n[Web Dev.](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/modern-web-development-certification \"Web Development Certification\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/modern-web-development-certification \"Web Development Certification\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/learn-modern-web-development \"Paid Web Development Course\")\n\n[Web App](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-application-development-certificates \"Web Application Development Certification\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-application-development-certificates \"Web Application Development Certification\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/web-application-development-course \"Paid Web Application Course\")\n\n[Web Design](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-design-certification \"Web Design Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-design-certification \"Web Design Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/learn-web-design \"Paid Web Design Course\")\n\n### JavaScript\n[JavaScript](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/javascript-certificate \"JavaScript Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/javascript-certificate \"JavaScript Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/javascript-course \"Paid JavaScript Course\")   [Bootcamp](https:\/\/www.w3schools.com\/bootcamp\/javascript.php \"JavaScript Bootcamp\")\n\n[React](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/react-js-certificate \"React.js Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/react-js-certificate \"React.js Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/react-js-course \"Paid React.js Course\")   [Bootcamp](https:\/\/www.w3schools.com\/bootcamp\/react.php \"React Bootcamp\")\n\n[jQuery](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/jquery-certificate \"jQuery Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/jquery-certificate \"jQuery Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/jquery-course \"Paid jQuery Course\")\n\n[Vue](https:\/\/campus.w3schools.com\/products\/vue-js-certification-exam \"Vue Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/products\/vue-js-certification-exam \"Vue Certification Exam\")\n\n### Programs\n[Full Access Best Value\\!](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/w3schools-full-access-course \"Paid Full Access Course\")\n\n[Front End](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/front-end-certificate \"Front End Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/front-end-certificate \"Front End Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/front-end-course \"Paid Front End Development Course\")   [Bootcamp](https:\/\/www.w3schools.com\/bootcamp\/web-development.php \"Front End Development Bootcamp\")\n\n[Web Dev.](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/modern-web-development-certification \"Web Development Certification\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/modern-web-development-certification \"Web Development Certification\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/learn-modern-web-development \"Paid Web Development Course\")   [Bootcamp](https:\/\/www.w3schools.com\/bootcamp\/web-development.php \"Web Development Bootcamp\")\n\n[Web App](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-application-development-certificates \"Web Application Development Certification\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-application-development-certificates \"Web Application Development Certification\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/web-application-development-course \"Paid Web Application Course\")\n\n[Web Design](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-design-certification \"Web Design Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-design-certification \"Web Design Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/learn-web-design \"Paid Web Design Course\")\n\n### Programs\n[Full Access Best Value\\!](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/w3schools-full-access-course \"Paid Full Access Course\")\n\n[Front End](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/front-end-certificate \"Front End Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/front-end-certificate \"Front End Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/front-end-course \"Paid Front End Development Course\")   [Bootcamp](https:\/\/www.w3schools.com\/bootcamp\/web-development.php \"Front End Development Bootcamp\")\n\n[Web Dev.](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/modern-web-development-certification \"Web Development Certification\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/modern-web-development-certification \"Web Development Certification\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/learn-modern-web-development \"Paid Web Development Course\")   [Bootcamp](https:\/\/www.w3schools.com\/bootcamp\/web-development.php \"Web Development Bootcamp\")\n\n[Web App](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-application-development-certificates \"Web Application Development Certification\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-application-development-certificates \"Web Application Development Certification\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/web-application-development-course \"Paid Web Application Course\")\n\n[Web Design](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-design-certification \"Web Design Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/web-design-certification \"Web Design Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/learn-web-design \"Paid Web Design Course\")\n\n### Backend\n[Python](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/python-certificate \"Python Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/python-certificate \"Python Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/python-course \"Paid Python Course\")   [Bootcamp](https:\/\/www.w3schools.com\/bootcamp\/python.php \"Python Bootcamp\")\n\n[SQL](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/sql-certificate \"SQL Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/sql-certificate \"SQL Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/sql-course \"SQL Python Course\")   [Bootcamp](https:\/\/www.w3schools.com\/bootcamp\/sql.php \"SQL Bootcamp\")\n\n[MySQL](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/mysql-certificate \"MySQL Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/mysql-certificate \"MySQL Certification Exam\")\n\n[PHP](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/php-certificate \"PHP Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/php-certificate \"PHP Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/php-course \"Paid PHP Course\")\n\n[Java](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/java-certificate \"Java Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/java-certificate \"Java Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/java-course \"Paid Java Course\")\n\n[C](https:\/\/campus.w3schools.com\/products\/c-certification-exam \"C Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/products\/c-certification-exam \"C Certification Exam\")\n\n[C++](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/c-certificate \"C++ Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/c-certificate \"C++ Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/c-course-1 \"Paid C++ Course\")\n\n[C\\#](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/c-certificate-1 \"C# Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/c-certificate-1 \"C# Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/c-course \"Paid C# Course\")\n\n[R](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/r-course \"Paid R Course\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/r-course \"Paid R Course\")\n\n[Django](https:\/\/campus.w3schools.com\/products\/django-certification-exam \"Django Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/products\/django-certification-exam \"Django Certification Exam\")\n\n[NodeJS](https:\/\/campus.w3schools.com\/products\/nodejs-certificate \"NodeJS Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/products\/nodejs-certificate \"NodeJS Certification Exam\")   [Bootcamp](https:\/\/www.w3schools.com\/bootcamp\/nodejs.php \"NodeJS Bootcamp\")\n\n[TypeScript](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/typescript-certificate \"TypeScript Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/typescript-certificate \"TypeScript Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/products\/learn-typescript \"Paid TypeScript Course\")\n\n[XML](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/xml-certificate \"XML Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/xml-certificate \"XML Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-catalog\/products\/xml-course \"Paid XML Course\")\n\n[Cyber Security](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/cyber-security-certificate \"Cyber Security Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/cyber-security-certificate \"Cyber Security Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/products\/cyber-security-course \"Paid Cyber Security Course\")\n\n[Accessibility](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/accessibility-certificate \"Accessibility Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/collections\/certifications\/products\/accessibility-certificate \"Accessibility Certification Exam\")   [Course](https:\/\/campus.w3schools.com\/products\/accessibility-course \"Paid Accessibility Course\")\n\n### Data Analytics\n[DSA](https:\/\/campus.w3schools.com\/products\/dsa-certification-exam \"DSA Certification Exam\")   [Exam](https:\/\/campus.w3schools.com\/products\/dsa-certification-exam \"DSA Certification Exam\")\n\n[Data Analytics](https:\/\/campus.w3schools.com\/products\/data-analytics-program \"Paid Data Analytics Course\")   [Course](https:\/\/campus.w3schools.com\/products\/data-analytics-program \"Paid Data Analytics Course\")\n\n[NumPy](https:\/\/campus.w3schools.com\/products\/numpy-course \"Paid NumPy Course\")   [Course](https:\/\/campus.w3schools.com\/products\/numpy-course \"Paid NumPy Course\")\n\n[Pandas](https:\/\/campus.w3schools.com\/products\/pandas-course \"Paid SciPy Course\")   [Course](https:\/\/campus.w3schools.com\/products\/pandas-course \"Paid SciPy Course\")\n\n[Excel](https:\/\/campus.w3schools.com\/products\/excel-certificate \"Excel Certification Exam\")   [Certificate](https:\/\/campus.w3schools.com\/products\/excel-certificate \"Excel Certification Exam\")\n\n[Social Media](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/social-media-marketing-course \"Paid Social Media Course\")   [Course](https:\/\/campus.w3schools.com\/collections\/course-best-sellers\/products\/social-media-marketing-course \"Paid Social Media Course\")\n\n[What is a Certificate?](https:\/\/campus.w3schools.com\/ \"W3Schools Campus\")\n\n×\n\n## **All Our Services**\nDark mode\n\n\n\nServices filter input\n\n×\n\nW3Schools offers a wide range of services and products for beginners and professionals,   \n helping millions of people everyday to learn and master new skills.\n\n[Free Tutorials Enjoy our free tutorials like millions of other internet users since 1999](https:\/\/www.w3schools.com\/tutorials\/index.php \"Tutorials\")\n\n[References Explore our selection of references covering all popular coding languages](https:\/\/www.w3schools.com\/references\/index.php \"References\")\n\n[Create a Website Create your own website with **W3Schools Spaces** - no setup required](https:\/\/www.w3schools.com\/spaces\/index.php \"Create a Website\")\n\n[Exercises Test your skills with different exercises](https:\/\/www.w3schools.com\/exercises\/index.php \"Test yourself with exercises\")\n\n[Quizzes Test yourself with multiple choice questions](https:\/\/www.w3schools.com\/quiztest\/default.asp \"Test yourself with quizzes\")\n\n[Code Challenges Test your skills with interactive code challenges](https:\/\/www.w3schools.com\/challenges\/index.php \"Test yourself with Code Challenges\")\n\n[Get Certified Document your knowledge](https:\/\/campus.w3schools.com\/collections\/certifications \"Certificates\")\n\n[Log in \/ Sign Up Create an account to track your progress](https:\/\/profile.w3schools.com\/sign-up?redirect_url=https%3A%2F%2Fwww.w3schools.com%2Fc%2Fc_operators.php \"Log in our Sign up\")\n\n[League Earn XP and climb the ranks with different challenges](https:\/\/www.w3schools.com\/league\/ \"Earn XP and climb the ranks with our League\")\n\n[Upgrade Become a PLUS user and unlock powerful features (ad-free, hosting, support,..)](https:\/\/order.w3schools.com\/plans \"Upgrade subscription\")\n\n[Where To Start Not sure where you want to start? Follow our guided path](https:\/\/www.w3schools.com\/where_to_start.asp \"Where To Start\")\n\n[Code Editor (Try it) With our online code editor, you can edit code and view the result in your browser](https:\/\/www.w3schools.com\/tryit\/default.asp \"W3Schools Code Editor\")\n\n[Bootcamps Learn from passionate instructors through live online sessions](https:\/\/www.w3schools.com\/bootcamp\/index.php \"W3Schools Bootcamps\")\n\n[Templates We have created a bunch of responsive website templates you can use - for free\\!](https:\/\/www.w3schools.com\/w3css\/w3css_templates.asp \"Free Web Templates\")\n\n[Web Hosting Host your own website, and share it to the world with **W3Schools Spaces**](https:\/\/www.w3schools.com\/spaces\/index.php \"Web Hosting with Spaces\")\n\n[Create a Server Create your own server using Python, PHP, React.js, Node.js, Java, C\\#, etc.](https:\/\/www.w3schools.com\/spaces\/index.php \"Get your own server\")\n\n[How To's Large collection of code snippets for HTML, CSS and JavaScript](https:\/\/www.w3schools.com\/howto\/default.asp \"How To Collection\")\n\n[CSS Framework Build fast and responsive sites using our free **W3.CSS** framework](https:\/\/www.w3schools.com\/w3css\/default.asp \"W3.CSS Framework\")\n\n[Videos Learn the basics of HTML in a fun and engaging video tutorial](https:\/\/www.w3schools.com\/videos\/index.php \"HTML Video Tutorial\")\n\n[Browser Statistics Read long term trends of browser usage](https:\/\/www.w3schools.com\/browsers\/default.asp \"Browser Statistics\")\n\n[Typing Speed Test your typing speed](https:\/\/www.w3schools.com\/typingspeed\/default.asp \"Test Your Typing speed\")\n\n[Color Picker Use our color picker to find different RGB, HEX and HSL colors. ![A circular color wheel showing the gradation of colors in the spectrum](https:\/\/www.w3schools.com\/images\/colorpicker2000.png)](https:\/\/www.w3schools.com\/colors\/colors_picker.asp \"Color Picker\")\n\n[Newsletter Join our newsletter and get access to exclusive content every month](https:\/\/campus.w3schools.com\/pages\/newsletter \"Join Our Newsletter\")\n\n[Emojis Reference Check out our refererence page with all the emojis supported in HTML 😊](https:\/\/www.w3schools.com\/charsets\/ref_emoji_intro.asp \"Emojis Reference\")\n\n[Code Game W3Schools Coding Game! Help the lynx collect pine cones ![Lynx logo](https:\/\/www.w3schools.com\/signup\/lynxlogo.svg)](https:\/\/www.w3schools.com\/codegame\/index.html \"Coding Game\")\n\n[UTF-8 Reference Check out our full UTF-8 Character reference](https:\/\/www.w3schools.com\/charsets\/default.asp \"UTF-8 Reference\")\n\n[Community Chat, Learn and Connect with Us on Discord](https:\/\/discord.com\/invite\/w3schools \"W3Schools Community\")\n\n[Teachers Contact us about W3Schools Academy for educational institutions](https:\/\/www.w3schools.com\/academy\/index.php \"W3Schools Academy \/ Classroom\")\n\n[For Businesses Contact us about W3Schools Academy for your organization](https:\/\/www.w3schools.com\/academy\/index.php \"W3Schools Academy \/ Classroom\")\n\n#### Contact Us\nAbout sales: sales@w3schools.com   \n About errors: help@w3schools.com\n\n[Web Developer Tools Free online tools to help with your everyday development tasks](https:\/\/www.w3schools.com\/tools\/index.php \"Web Developer Tools\")\n\n[**](https:\/\/www.linkedin.com\/company\/w3schools.com\/ \"W3Schools on LinkedIn\")   [**](https:\/\/discord.com\/invite\/w3schools \"Join the W3schools community on Discord\")   [**](https:\/\/www.facebook.com\/w3schoolscom\/ \"W3Schools on Facebook\")   [**](https:\/\/www.instagram.com\/w3schools.com_official\/ \"W3Schools on Instagram\")\n\n×\n\n❮\n\n❯\n\n[HTML](https:\/\/www.w3schools.com\/html\/default.asp \"HTML Tutorial\") [CSS](https:\/\/www.w3schools.com\/css\/default.asp \"CSS Tutorial\") [JAVASCRIPT](https:\/\/www.w3schools.com\/js\/default.asp \"JavaScript Tutorial\") [SQL](https:\/\/www.w3schools.com\/sql\/default.asp \"SQL Tutorial\") [PYTHON](https:\/\/www.w3schools.com\/python\/default.asp \"Python Tutorial\") [JAVA](https:\/\/www.w3schools.com\/java\/default.asp \"Java Tutorial\") [PHP](https:\/\/www.w3schools.com\/php\/default.asp \"PHP Tutorial\") [HOW TO](https:\/\/www.w3schools.com\/howto\/default.asp \"How to\") [W3.CSS](https:\/\/www.w3schools.com\/w3css\/default.asp \"W3.CSS Tutorial\") [C](https:\/\/www.w3schools.com\/c\/index.php \"C Tutorial\") [C++](https:\/\/www.w3schools.com\/cpp\/default.asp \"C++ Tutorial\") [C\\#](https:\/\/www.w3schools.com\/cs\/index.php \"C# Tutorial\") [BOOTSTRAP](https:\/\/www.w3schools.com\/bootstrap\/bootstrap_ver.asp \"Bootstrap Tutorial\") [REACT](https:\/\/www.w3schools.com\/react\/default.asp \"React Tutorial\") [MYSQL](https:\/\/www.w3schools.com\/mysql\/default.asp \"MySQL Tutorial\") [JQUERY](https:\/\/www.w3schools.com\/jquery\/default.asp \"JQuery Tutorial\") [EXCEL](https:\/\/www.w3schools.com\/excel\/index.php \"Excel Tutorial\") [XML](https:\/\/www.w3schools.com\/xml\/default.asp \"XML Tutorial\") [DJANGO](https:\/\/www.w3schools.com\/django\/index.php \"Django Tutorial\") [NUMPY](https:\/\/www.w3schools.com\/python\/numpy\/default.asp \"NumPy Tutorial\") [PANDAS](https:\/\/www.w3schools.com\/python\/pandas\/default.asp \"Pandas Tutorial\") [NODEJS](https:\/\/www.w3schools.com\/nodejs\/default.asp \"Node.js Tutorial\") [DSA](https:\/\/www.w3schools.com\/dsa\/index.php \"DSA Tutorial\") [TYPESCRIPT](https:\/\/www.w3schools.com\/typescript\/index.php \"TypeScript Tutorial\") [SWIFT](https:\/\/www.w3schools.com\/swift\/default.asp \"Swift Tutorial\") [ANGULAR](https:\/\/www.w3schools.com\/angular\/default.asp \"Angular Tutorial\") [ANGULARJS](https:\/\/www.w3schools.com\/angularjs\/default.asp \"Angular.js Tutorial\") [GIT](https:\/\/www.w3schools.com\/git\/default.asp \"Git Tutorial\") [POSTGRESQL](https:\/\/www.w3schools.com\/postgresql\/index.php \"PostgreSQL Tutorial\") [MONGODB](https:\/\/www.w3schools.com\/mongodb\/index.php \"MongoDB Tutorial\") [ASP](https:\/\/www.w3schools.com\/asp\/default.asp \"ASP Tutorial\") [AI](https:\/\/www.w3schools.com\/ai\/default.asp \"A.I. Tutorial\") [R](https:\/\/www.w3schools.com\/r\/default.asp \"R Tutorial\") [GO](https:\/\/www.w3schools.com\/go\/index.php \"Go Tutorial\") [KOTLIN](https:\/\/www.w3schools.com\/kotlin\/index.php \"Kotlin Tutorial\") [SWIFT](https:\/\/www.w3schools.com\/swift\/default.asp \"Swift Tutorial\") [SASS](https:\/\/www.w3schools.com\/sass\/default.asp \"Sass Tutorial\") [VUE](https:\/\/www.w3schools.com\/vue\/index.php \"Vue.js Tutorial\") [GEN AI](https:\/\/www.w3schools.com\/gen_ai\/index.php \"Gen A.I. Tutorial\") [SCIPY](https:\/\/www.w3schools.com\/python\/scipy\/index.php \"SciPy Tutorial\") [AWS](https:\/\/www.w3schools.com\/aws\/index.php \"AWS Tutorial\") [CYBERSECURITY](https:\/\/www.w3schools.com\/cybersecurity\/index.php \"Cyber security Tutorial\") [DATA SCIENCE](https:\/\/www.w3schools.com\/datascience\/default.asp \"Data science Tutorial\") [INTRO TO PROGRAMMING](https:\/\/www.w3schools.com\/programming\/index.php \"Introduction to Programming\") [HTML & CSS](https:\/\/www.w3schools.com\/htmlcss\/default.asp \"Introduction to HTML & CSS\") [BASH](https:\/\/www.w3schools.com\/bash\/index.php \"Bash Tutorial\") [RUST](https:\/\/www.w3schools.com\/rust\/index.php \"Rust Tutorial\") [TOOLS](https:\/\/www.w3schools.com\/tools\/index.php \"Web Developer Tools\")\n\n## C Tutorial\n[C HOME](https:\/\/www.w3schools.com\/c\/index.php) [C Intro](https:\/\/www.w3schools.com\/c\/c_intro.php) [C Get Started](https:\/\/www.w3schools.com\/c\/c_getstarted.php) [C Syntax](https:\/\/www.w3schools.com\/c\/c_syntax.php)\n\n[C Syntax](https:\/\/www.w3schools.com\/c\/c_syntax.php) [C Statements](https:\/\/www.w3schools.com\/c\/c_statements.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_syntax.php)\n\n[C Output](https:\/\/www.w3schools.com\/c\/c_output.php)\n\n[Print Text](https:\/\/www.w3schools.com\/c\/c_output.php) [New Lines](https:\/\/www.w3schools.com\/c\/c_newline.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_output.php)\n\n[C Comments](https:\/\/www.w3schools.com\/c\/c_comments.php) [C Variables](https:\/\/www.w3schools.com\/c\/c_variables.php)\n\n[Create Variables](https:\/\/www.w3schools.com\/c\/c_variables.php) [Format Specifiers](https:\/\/www.w3schools.com\/c\/c_variables_format.php) [Change Values](https:\/\/www.w3schools.com\/c\/c_variables_change.php) [Multiple Variables](https:\/\/www.w3schools.com\/c\/c_variables_multiple.php) [Variable Names](https:\/\/www.w3schools.com\/c\/c_variables_names.php) [Real-Life Examples](https:\/\/www.w3schools.com\/c\/c_variables_reallife.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_variables.php)\n\n[C Data Types](https:\/\/www.w3schools.com\/c\/c_data_types.php)\n\n[Data Types](https:\/\/www.w3schools.com\/c\/c_data_types.php) [Characters](https:\/\/www.w3schools.com\/c\/c_data_types_characters.php) [Numbers](https:\/\/www.w3schools.com\/c\/c_data_types_numbers.php) [Decimal Precision](https:\/\/www.w3schools.com\/c\/c_data_types_dec.php) [Memory Size](https:\/\/www.w3schools.com\/c\/c_data_types_sizeof.php) [Real-Life Example](https:\/\/www.w3schools.com\/c\/c_data_types_reallife.php) [Extended Types](https:\/\/www.w3schools.com\/c\/c_data_types_extended.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_data_types.php)\n\n[C Type Conversion](https:\/\/www.w3schools.com\/c\/c_type_conversion.php) [C Constants](https:\/\/www.w3schools.com\/c\/c_constants.php) [C Operators](https:\/\/www.w3schools.com\/c\/c_operators.php)\n\n[Operators](https:\/\/www.w3schools.com\/c\/c_operators.php) [Arithmetic](https:\/\/www.w3schools.com\/c\/c_operators_arithmetic.php) [Assignment](https:\/\/www.w3schools.com\/c\/c_operators_assignment.php) [Comparison](https:\/\/www.w3schools.com\/c\/c_operators_comparison.php) [Logical](https:\/\/www.w3schools.com\/c\/c_operators_logical.php) [Precedence](https:\/\/www.w3schools.com\/c\/c_operators_precedence.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_operators.php)\n\n[C Booleans](https:\/\/www.w3schools.com\/c\/c_booleans.php)\n\n[Booleans](https:\/\/www.w3schools.com\/c\/c_booleans.php) [Real-Life Examples](https:\/\/www.w3schools.com\/c\/c_booleans_reallife.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_booleans.php)\n\n[C If...Else](https:\/\/www.w3schools.com\/c\/c_conditions.php)\n\n[if](https:\/\/www.w3schools.com\/c\/c_conditions.php) [else](https:\/\/www.w3schools.com\/c\/c_conditions_else.php) [else if](https:\/\/www.w3schools.com\/c\/c_conditions_elseif.php) [Short Hand If](https:\/\/www.w3schools.com\/c\/c_conditions_short_hand.php) [Nested If](https:\/\/www.w3schools.com\/c\/c_conditions_nested.php) [Logical Operators](https:\/\/www.w3schools.com\/c\/c_conditions_logical.php) [Real-Life Examples](https:\/\/www.w3schools.com\/c\/c_conditions_reallife.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_conditions.php)\n\n[C Switch](https:\/\/www.w3schools.com\/c\/c_switch.php)\n\n[Switch](https:\/\/www.w3schools.com\/c\/c_switch.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_switch.php)\n\n[C While Loop](https:\/\/www.w3schools.com\/c\/c_while_loop.php)\n\n[While Loop](https:\/\/www.w3schools.com\/c\/c_while_loop.php) [Do\/While Loop](https:\/\/www.w3schools.com\/c\/c_do_while_loop.php) [Real-Life Examples](https:\/\/www.w3schools.com\/c\/c_while_loop_reallife.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_while_loop.php)\n\n[C For Loop](https:\/\/www.w3schools.com\/c\/c_for_loop.php)\n\n[For Loop](https:\/\/www.w3schools.com\/c\/c_for_loop.php) [Nested Loops](https:\/\/www.w3schools.com\/c\/c_for_loop_nested.php) [Real-Life Examples](https:\/\/www.w3schools.com\/c\/c_for_loop_reallife.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_for_loop.php)\n\n[C Break\/Continue](https:\/\/www.w3schools.com\/c\/c_break_continue.php) [C Arrays](https:\/\/www.w3schools.com\/c\/c_arrays.php)\n\n[Arrays](https:\/\/www.w3schools.com\/c\/c_arrays.php) [Array Size](https:\/\/www.w3schools.com\/c\/c_arrays_size.php) [Array Loops](https:\/\/www.w3schools.com\/c\/c_arrays_loop.php) [Real-Life Examples](https:\/\/www.w3schools.com\/c\/c_arrays_reallife.php) [Multidimensional Arrays](https:\/\/www.w3schools.com\/c\/c_arrays_multi.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_arrays.php)\n\n[C Strings](https:\/\/www.w3schools.com\/c\/c_strings.php)\n\n[Strings](https:\/\/www.w3schools.com\/c\/c_strings.php) [Special Characters](https:\/\/www.w3schools.com\/c\/c_strings_esc.php) [String Functions](https:\/\/www.w3schools.com\/c\/c_strings_functions.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_strings.php)\n\n[C User Input](https:\/\/www.w3schools.com\/c\/c_user_input.php) [C Memory Address](https:\/\/www.w3schools.com\/c\/c_memory_address.php) [C Pointers](https:\/\/www.w3schools.com\/c\/c_pointers.php)\n\n[Pointers](https:\/\/www.w3schools.com\/c\/c_pointers.php) [Pointers & Arrays](https:\/\/www.w3schools.com\/c\/c_pointers_arrays.php) [Pointer Arithmetic](https:\/\/www.w3schools.com\/c\/c_pointers_arithmetic.php) [Pointer to Pointer](https:\/\/www.w3schools.com\/c\/c_pointer_to_pointer.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_pointers.php)\n\n## C Functions\n[C Functions](https:\/\/www.w3schools.com\/c\/c_functions.php) [C Function Parameters](https:\/\/www.w3schools.com\/c\/c_functions_parameters.php) [C Scope](https:\/\/www.w3schools.com\/c\/c_scope.php) [C Function Declaration](https:\/\/www.w3schools.com\/c\/c_functions_decl.php) [C Functions Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_functions.php) [C Math Functions](https:\/\/www.w3schools.com\/c\/c_math.php) [C Inline Functions](https:\/\/www.w3schools.com\/c\/c_functions_inline.php) [C Recursion](https:\/\/www.w3schools.com\/c\/c_functions_recursion.php) [C Function Pointers](https:\/\/www.w3schools.com\/c\/c_functions_pointers.php)\n\n[Function Pointers](https:\/\/www.w3schools.com\/c\/c_functions_pointers.php) [Callback Functions](https:\/\/www.w3schools.com\/c\/c_functions_callback.php)\n\n## C Files\n[C Create Files](https:\/\/www.w3schools.com\/c\/c_files.php) [C Write To Files](https:\/\/www.w3schools.com\/c\/c_files_write.php) [C Read Files](https:\/\/www.w3schools.com\/c\/c_files_read.php)\n\n## C Structures\n[C Structures](https:\/\/www.w3schools.com\/c\/c_structs.php) [C Structs Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_structs.php) [C Nested Structures](https:\/\/www.w3schools.com\/c\/c_structs_nested.php) [C Structs & Pointers](https:\/\/www.w3schools.com\/c\/c_structs_pointers.php) [C Unions](https:\/\/www.w3schools.com\/c\/c_unions.php) [C typedef](https:\/\/www.w3schools.com\/c\/c_typedef.php) [C Struct Padding](https:\/\/www.w3schools.com\/c\/c_structs_padding.php)\n\n## C Enums\n[C Enums](https:\/\/www.w3schools.com\/c\/c_enums.php)\n\n[Enums](https:\/\/www.w3schools.com\/c\/c_enums.php) [Code Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_enums.php)\n\n## C Memory\n[C Memory Management](https:\/\/www.w3schools.com\/c\/c_memory_management.php)\n\n[C Allocate Memory](https:\/\/www.w3schools.com\/c\/c_memory_allocate.php) [C Access Memory](https:\/\/www.w3schools.com\/c\/c_memory_access.php) [C Reallocate Memory](https:\/\/www.w3schools.com\/c\/c_memory_reallocate.php) [C Deallocate Memory](https:\/\/www.w3schools.com\/c\/c_memory_deallocate.php) [C Structs and Memory](https:\/\/www.w3schools.com\/c\/c_memory_struct.php) [C Memory Example](https:\/\/www.w3schools.com\/c\/c_memory_reallife.php)\n\n## C Errors\n[C Errors](https:\/\/www.w3schools.com\/c\/c_errors.php) [C Error Challenge](https:\/\/www.w3schools.com\/c\/c_challenges_errors.php) [C Debugging](https:\/\/www.w3schools.com\/c\/c_debugging.php) [C NULL](https:\/\/www.w3schools.com\/c\/c_null.php) [C Error Handling](https:\/\/www.w3schools.com\/c\/c_error_handling.php) [C Input Validation](https:\/\/www.w3schools.com\/c\/c_input_validation.php)\n\n## C More\n[C Date](https:\/\/www.w3schools.com\/c\/c_date_time.php) [C Random Numbers](https:\/\/www.w3schools.com\/c\/c_random_numbers.php) [C Macros](https:\/\/www.w3schools.com\/c\/c_macros.php) [C Organize Code](https:\/\/www.w3schools.com\/c\/c_organize_code.php) [C Storage Classes](https:\/\/www.w3schools.com\/c\/c_storage_classes.php) [C Bitwise Operators](https:\/\/www.w3schools.com\/c\/c_bitwise_operators.php) [C Fixed-width Integers](https:\/\/www.w3schools.com\/c\/c_fixed_width_ints.php)\n\n## C Projects\n[C Projects](https:\/\/www.w3schools.com\/c\/c_projects.php)\n\n## C Reference\n[C Reference](https:\/\/www.w3schools.com\/c\/c_ref_reference.php) [C Keywords](https:\/\/www.w3schools.com\/c\/c_ref_keywords.php) [C \\<stdio.h\\>](https:\/\/www.w3schools.com\/c\/c_ref_stdio.php) [C \\<stdlib.h\\>](https:\/\/www.w3schools.com\/c\/c_ref_stdlib.php) [C \\<string.h\\>](https:\/\/www.w3schools.com\/c\/c_ref_string.php) [C \\<math.h\\>](https:\/\/www.w3schools.com\/c\/c_ref_math.php) [C \\<ctype.h\\>](https:\/\/www.w3schools.com\/c\/c_ref_ctype.php) [C \\<time.h\\>](https:\/\/www.w3schools.com\/c\/c_ref_time.php)\n\n## C Examples\n[C Examples](https:\/\/www.w3schools.com\/c\/c_examples.php) [C Real-Life Examples](https:\/\/www.w3schools.com\/c\/c_real_life_examples.php) [C Exercises](https:\/\/www.w3schools.com\/c\/c_exercises.php) [C Quiz](https:\/\/www.w3schools.com\/c\/c_quiz.php) [C Code Challenges](https:\/\/www.w3schools.com\/c\/c_challenges.php) [C Compiler](https:\/\/www.w3schools.com\/c\/c_compiler.php) [C Syllabus](https:\/\/www.w3schools.com\/c\/c_syllabus.php) [C Study Plan](https:\/\/www.w3schools.com\/c\/c_study_plan.php) [C Interview Q\\&A](https:\/\/www.w3schools.com\/c\/c_interview_questions.php) [C Certificate](https:\/\/www.w3schools.com\/c\/c_exam.php)\n\n# C Operators\n[❮ Previous](https:\/\/www.w3schools.com\/c\/c_constants.php) [Next ❯](https:\/\/www.w3schools.com\/c\/c_operators_arithmetic.php)\n***\n## Operators\nOperators are used to perform operations on variables and values.\n\nIn the example below, we use the `+` **operator** to add together two values:\n\n### Example\nint myNum = 100 + 50;\n\n[Try it Yourself »](https:\/\/www.w3schools.com\/c\/tryc.php?filename=demo_oper)\n\nAlthough the `+` operator is often used to add together two values, like in the example above, it can also be used to add together a variable and a value, or a variable and another variable:\n\n### Example\nint sum1 = 100 + 50;   \/\/ 150 (100 + 50)  \n  int sum2 = sum1 + 250; \/\/ 400 (150 + 250)  \n  int sum3 = sum2 + sum2; \/\/ 800 (400 + 400)\n\n[Try it Yourself »](https:\/\/www.w3schools.com\/c\/tryc.php?filename=demo_oper2)\n\nC divides the operators into the following groups:\n\n- [Arithmetic operators](https:\/\/www.w3schools.com\/c\/c_operators_arithmetic.php)\n- [Assignment operators](https:\/\/www.w3schools.com\/c\/c_operators_assignment.php)\n- [Comparison operators](https:\/\/www.w3schools.com\/c\/c_operators_comparison.php)\n- [Logical operators](https:\/\/www.w3schools.com\/c\/c_operators_logical.php)\n- [Bitwise operators](https:\/\/www.w3schools.com\/c\/c_bitwise_operators.php) (advanced)\n***\n[REMOVE ADS](https:\/\/order.w3schools.com\/plans)\n***\n[❮ Previous](https:\/\/www.w3schools.com\/c\/c_constants.php) [Next ❯](https:\/\/www.w3schools.com\/c\/c_operators_arithmetic.php)\n\n[★ +1](https:\/\/profile.w3schools.com\/log-in?redirect_url=https%3A%2F%2Fwww.w3schools.com%2Fc%2Fc_operators.php \"Your W3Schools Profile\")\n\n[Sign in to track progress](https:\/\/profile.w3schools.com\/log-in?redirect_url=https%3A%2F%2Fpathfinder.w3schools.com&origin=https%3A%2F%2Fwww.w3schools.com%2Fc%2Fc_operators.php \"Sign in to track your progress\")\n\n[![Get Certified Offer](https:\/\/www.w3schools.com\/images\/img_2026easter_course_300.webp)](https:\/\/campus.w3schools.com\/collections\/course-catalog)\n\n#### [COLOR 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[W3Schools is Powered by W3.CSS](https:\/\/www.w3schools.com\/w3css\/default.asp).","attrs_readable_markdown":"## C Operators\n***\n## Operators\nOperators are used to perform operations on variables and values.\n\nIn the example below, we use the `+` **operator** to add together two values:\n\nAlthough the `+` operator is often used to add together two values, like in the example above, it can also be used to add together a variable and a value, or a variable and another variable:\n\n### Example\nint sum1 = 100 + 50;     int sum2 = sum1 + 250;   int sum3 = sum2 + sum2;\n\n[Try it Yourself »](https:\/\/www.w3schools.com\/c\/tryc.php?filename=demo_oper2)\n\nC divides the operators into the following groups:\n\n- [Arithmetic operators](https:\/\/www.w3schools.com\/c\/c_operators_arithmetic.php)\n- [Assignment operators](https:\/\/www.w3schools.com\/c\/c_operators_assignment.php)\n- [Comparison operators](https:\/\/www.w3schools.com\/c\/c_operators_comparison.php)\n- [Logical operators](https:\/\/www.w3schools.com\/c\/c_operators_logical.php)\n- [Bitwise operators](https:\/\/www.w3schools.com\/c\/c_bitwise_operators.php) (advanced)\n***\n***","meta_canonical":null}

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Boilerpipe Text	C Operators Operators Operators are used to perform operations on variables and values. In the example below, we use the + operator to add together two values: Although the + operator is often used to add together two values, like in the example above, it can also be used to add together a variable and a value, or a variable and another variable: Example int sum1 = 100 + 50 ; int sum2 = sum1 + 250 ; int sum3 = sum2 + sum2; Try it Yourself » C divides the operators into the following groups: Arithmetic operators Assignment operators Comparison operators Logical operators Bitwise operators (advanced)
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[Tutorial](https://www.w3schools.com/bash/index.php "Bash Tutorial") [Learn MongoDB](https://www.w3schools.com/mongodb/index.php "MongoDB Tutorial") [Tutorial](https://www.w3schools.com/mongodb/index.php "MongoDB Tutorial") [Learn AWS Cloud](https://www.w3schools.com/aws/index.php "AWS Cloud Tutorial") [Tutorial](https://www.w3schools.com/aws/index.php "AWS Cloud Tutorial") [Learn XML](https://www.w3schools.com/xml/default.asp "XML Tutorial") [Tutorial](https://www.w3schools.com/xml/default.asp "XML Tutorial") [Reference](https://www.w3schools.com/xml/dom_nodetype.asp "XML Reference") ### Data Analytics [Learn AI](https://www.w3schools.com/ai/default.asp "Artificial Intelligence Tutorial") [Tutorial](https://www.w3schools.com/ai/default.asp "Artificial Intelligence Tutorial") [Learn Generative AI](https://www.w3schools.com/gen_ai/index.php "Generative AI Tutorial") [Tutorial](https://www.w3schools.com/gen_ai/index.php "Generative AI Tutorial") [Learn 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"Statistics Tutorial") [Learn Excel](https://www.w3schools.com/excel/index.php "Excel Tutorial") [Tutorial](https://www.w3schools.com/excel/index.php "Excel Tutorial") [Learn Google Sheets](https://www.w3schools.com/googlesheets/index.php "Google Sheets Tutorial") [Tutorial](https://www.w3schools.com/googlesheets/index.php "Google Sheets Tutorial") ### Web Building [Create a Website](https://www.w3schools.com/spaces/index.php "Get Your Own Website With W3schools Spaces") [Create a Server NEW](https://www.w3schools.com/spaces/index.php "Get Your Own Server With W3schools Spaces") [Where To Start](https://www.w3schools.com/where_to_start.asp "Where To Start - Web Development") [Web Templates](https://www.w3schools.com/w3css/w3css_templates.asp "Free Web Templates") [Web Statistics](https://www.w3schools.com/browsers/default.asp "Web Statistics") [Web Certificates](https://campus.w3schools.com/ "Certificates") [Web Development](https://www.w3schools.com/whatis/default.asp "Web Development Roadmaps") [Introduction to Programming](https://www.w3schools.com/programming/index.php "Introduction to Programming") [Introduction to HTML & CSS](https://www.w3schools.com/htmlcss/default.asp "HTML & CSS") [Code Editor](https://www.w3schools.com/tryit/default.asp "Try it - Code Editor") [Test Your Typing Speed](https://www.w3schools.com/typingspeed/default.asp "Test Your Typing Speed") [Play a Code Game](https://www.w3schools.com/codegame/index.html "Play a Code Game") [Web Developer Tools](https://www.w3schools.com/tools/index.php "Web Developer Tools") [Cyber Security](https://www.w3schools.com/cybersecurity/index.php "Cyber Security Tutorial") [Accessibility](https://www.w3schools.com/accessibility/index.php "Accessibility Security Tutorial") [Join our Newsletter](https://campus.w3schools.com/pages/newsletter "W3Schools Newsletter") × ## References References filter input × ### HTML and CSS [HTML Tags Reference](https://www.w3schools.com/tags/default.asp "HTML Tag Reference") [CSS Reference](https://www.w3schools.com/cssref/default.asp "CSS Reference") [W3.CSS Reference](https://www.w3schools.com/w3css/w3css_references.asp "W3.CSS Reference") [Bootstrap 3 Reference](https://www.w3schools.com/bootstrap/bootstrap_ref_all_classes.asp "Bootstrap3 Reference") [Bootstrap 4 Reference](https://www.w3schools.com/bootstrap4/bootstrap_ref_all_classes.asp "Bootstrap4 Reference") [Color Names](https://www.w3schools.com/colors/colors_names.asp "Color Names") [Icons Reference](https://www.w3schools.com/icons/default.asp "Icons Reference") [SVG Reference](https://www.w3schools.com/graphics/svg_reference.asp "SVG Reference") [Canvas Reference](https://www.w3schools.com/graphics/canvas_reference.asp "Canvas Reference") [Sass Reference](https://www.w3schools.com/sass/sass_functions_string.php "SASS Reference") [UTF-8 Charset Reference](https://www.w3schools.com/charsets/default.asp "UTF-8 Reference") [UTF-8 Emojis 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Reference](https://www.w3schools.com/sql/sql_ref_keywords.asp "SQL Reference") [MySQL Reference](https://www.w3schools.com/mysql/mysql_datatypes.asp "MySQL Reference") [PHP Reference](https://www.w3schools.com/php/php_ref_overview.asp "PHP Reference") [Java Reference](https://www.w3schools.com/java/java_ref_reference.asp "Java Reference") [C Reference](https://www.w3schools.com/c/c_ref_reference.php "C Reference") [C++ Reference](https://www.w3schools.com/cpp/cpp_ref_reference.asp "C++ Reference") [Django Reference](https://www.w3schools.com/django/django_ref_template_tags.php "Django Reference") [ASP Reference](https://www.w3schools.com/asp/asp_ref_vbscript_functions.asp "ASP Reference") [Node.js Reference](https://www.w3schools.com/nodejs/ref_modules.asp "Node.js Reference") [XML Reference](https://www.w3schools.com/xml/dom_nodetype.asp "XML Reference") × ## Exercises Excercises filter input × ### HTML and CSS [HTML](https://www.w3schools.com/html/html_exercises.asp "HTML Exercises") [Exercise](https://www.w3schools.com/html/html_exercises.asp "HTML Exercises") [Quiz](https://www.w3schools.com/html/html_quiz.asp "HTML Quizzes") [Challenge](https://www.w3schools.com/html/html_challenges.asp "HTML Code Challenges") [CSS](https://www.w3schools.com/css/css_exercises.asp "CSS Exercises") [Exercise](https://www.w3schools.com/css/css_exercises.asp "CSS Exercises") [Quiz](https://www.w3schools.com/css/css_quiz.asp "CSS Quizzes") [Challenge](https://www.w3schools.com/css/css_challenges.asp "CSS Code Challenges") [Bootstrap 3](https://www.w3schools.com/bootstrap/bootstrap_exercises.asp "Bootstrap 3 Exercises") [Exercise](https://www.w3schools.com/bootstrap/bootstrap_exercises.asp "Bootstrap 3 Exercises") [Quiz](https://www.w3schools.com/bootstrap/bootstrap_quiz.asp "Bootstrap 3 Quizzes") [Bootstrap 4](https://www.w3schools.com/bootstrap4/bootstrap_exercises.asp "Bootstrap 4 Exercises") [Exercise](https://www.w3schools.com/bootstrap4/bootstrap_exercises.asp "Bootstrap 4 Exercises") [Quiz](https://www.w3schools.com/bootstrap4/bootstrap_quiz.asp "Bootstrap 4 Quizzes") [Bootstrap 5](https://www.w3schools.com/bootstrap5/bootstrap_exercises.php "Bootstrap 5 Exercises") [Exercise](https://www.w3schools.com/bootstrap5/bootstrap_exercises.php "Bootstrap 5 Exercises") [Quiz](https://www.w3schools.com/bootstrap5/bootstrap_quiz.php "Bootstrap 5 Quizzes") ### Data Analytics [DSA](https://www.w3schools.com/dsa/dsa_exercises.php "DSA Exercises") [Exercise](https://www.w3schools.com/dsa/dsa_exercises.php "DSA Exercises") [Quiz](https://www.w3schools.com/dsa/dsa_quiz.php "DSA Quizzes") [NumPy](https://www.w3schools.com/python/numpy/numpy_exercises.asp "NumPy Exercises") [Exercise](https://www.w3schools.com/python/numpy/numpy_exercises.asp "NumPy Exercises") [Quiz](https://www.w3schools.com/python/numpy/numpy_quiz.asp "NumPy Quizzes") [Pandas](https://www.w3schools.com/python/pandas/pandas_exercises.asp "Pandas Exercises") [Exercise](https://www.w3schools.com/python/pandas/pandas_exercises.asp "Pandas Exercises") [Quiz](https://www.w3schools.com/python/pandas/pandas_quiz.asp "Pandas Quizzes") [SciPy](https://www.w3schools.com/python/scipy/scipy_exercises.php "SciPy Exercises") [Exercise](https://www.w3schools.com/python/scipy/scipy_exercises.php "SciPy Exercises") [Quiz](https://www.w3schools.com/python/scipy/scipy_quiz.php "SciPy Quizzes") [Excel](https://www.w3schools.com/excel/excel_exercises.php "Excel Exercises") [Exercise](https://www.w3schools.com/excel/excel_exercises.php "Excel Exercises") [What is an Exercise?](https://www.w3schools.com/exercises/index.php "W3Schools Exercises") [What is a Quiz?](https://www.w3schools.com/quiztest/default.asp "W3Schools Quizzes") [What is a Challenge?](https://www.w3schools.com/challenges/index.php "W3Schools Challenges") ### JavaScript [JavaScript](https://www.w3schools.com/js/js_exercises.asp "JavaScript Exercises") [Exercise](https://www.w3schools.com/js/js_exercises.asp "JavaScript Exercises") [Quiz](https://www.w3schools.com/js/js_quiz.asp "JavaScript Quizzes") [React](https://www.w3schools.com/react/react_exercises.asp "React Exercises") [Exercise](https://www.w3schools.com/react/react_exercises.asp "React Exercises") [Quiz](https://www.w3schools.com/react/react_quiz.asp "React Quizzes") [jQuery](https://www.w3schools.com/jquery/jquery_exercises.asp "jQuery Exercises") [Exercise](https://www.w3schools.com/jquery/jquery_exercises.asp "jQuery Exercises") [Quiz](https://www.w3schools.com/jquery/jquery_quiz.asp "jQuery Quizzes") [Vue](https://www.w3schools.com/vue/vue_exercises.php "Vue Exercises") [Exercise](https://www.w3schools.com/vue/vue_exercises.php "Vue Exercises") [Quiz](https://www.w3schools.com/vue/vue_quiz.php "Vue Quizzes") [Angular](https://www.w3schools.com/angular/angular_exercises.asp "Angular Exercises") [Exercise](https://www.w3schools.com/angular/angular_exercises.asp "Angular Exercises") [Quiz](https://www.w3schools.com/angular/angular_quiz.asp "Angular Quizzes") ### Backend [Python](https://www.w3schools.com/python/python_exercises.asp "Python Exercises") [Exercise](https://www.w3schools.com/python/python_exercises.asp "Python Exercises") [Quiz](https://www.w3schools.com/python/python_quiz.asp "Python Quizzes") [Challenge](https://www.w3schools.com/python/python_challenges.asp "Python Code Challenges") [SQL](https://www.w3schools.com/sql/sql_exercises.asp "SQL Exercises") [Exercise](https://www.w3schools.com/sql/sql_exercises.asp "SQL Exercises") [Quiz](https://www.w3schools.com/sql/sql_quiz.asp "SQL Quizzes") [MySQL](https://www.w3schools.com/mysql/mysql_exercises.asp "MySQL Exercises") [Exercise](https://www.w3schools.com/mysql/mysql_exercises.asp "MySQL Exercises") [Quiz](https://www.w3schools.com/mysql/mysql_quiz.asp "MySQL Quizzes") [PHP](https://www.w3schools.com/php/php_exercises.asp "PHP Exercises") [Exercise](https://www.w3schools.com/php/php_exercises.asp "PHP Exercises") [Quiz](https://www.w3schools.com/php/php_quiz.asp "PHP Quizzes") [Java](https://www.w3schools.com/java/java_exercises.asp "Java Exercises") [Exercise](https://www.w3schools.com/java/java_exercises.asp "Java Exercises") [Quiz](https://www.w3schools.com/java/java_quiz.asp "Java Quizzes") [Challenge](https://www.w3schools.com/java/java_challenges.asp "Java Code Challenges") [C](https://www.w3schools.com/c/c_exercises.php "C Exercises") [Exercise](https://www.w3schools.com/c/c_exercises.php "C Exercises") [Quiz](https://www.w3schools.com/c/c_quiz.php "C Quizzes") [Challenge](https://www.w3schools.com/c/c_challenges.php "C Challenges") [C++](https://www.w3schools.com/cpp/cpp_exercises.asp "C++ Exercises") [Exercise](https://www.w3schools.com/cpp/cpp_exercises.asp "C++ Exercises") [Quiz](https://www.w3schools.com/cpp/cpp_quiz.asp "C++ Quizzes") [Challenge](https://www.w3schools.com/cpp/cpp_challenges.asp "C++ Code Challenges") [C\#](https://www.w3schools.com/cs/cs_exercises.php "C# Exercises") [Exercise](https://www.w3schools.com/cs/cs_exercises.php "C# Exercises") [Quiz](https://www.w3schools.com/cs/cs_quiz.php "C# Quizzes") [R](https://www.w3schools.com/r/r_exercises.asp "R Exercises") [Exercise](https://www.w3schools.com/r/r_exercises.asp "R Exercises") [Quiz](https://www.w3schools.com/r/r_quiz.asp "R Quizzes") [Kotlin](https://www.w3schools.com/kotlin/kotlin_exercises.php "Kotlin Exercises") [Exercise](https://www.w3schools.com/kotlin/kotlin_exercises.php "Kotlin Exercises") [Quiz](https://www.w3schools.com/kotlin/kotlin_quiz.php "Kotlin Quizzes") [Django](https://www.w3schools.com/django/django_exercises.php "Django Exercises") [Exercise](https://www.w3schools.com/django/django_exercises.php "Django Exercises") [Quiz](https://www.w3schools.com/django/django_quiz.php "Django Quizzes") [Node.js](https://www.w3schools.com/nodejs/nodejs_exercises.asp "Node.js Exercises") [Exercise](https://www.w3schools.com/nodejs/nodejs_exercises.asp "Node.js Exercises") [Quiz](https://www.w3schools.com/nodejs/nodejs_quiz.asp "Node.js Quizzes") [PostgreSQL](https://www.w3schools.com/postgresql/postgresql_exercises.php "PostgreSQL Exercises") [Exercise](https://www.w3schools.com/postgresql/postgresql_exercises.php "PostgreSQL Exercises") [Quiz](https://www.w3schools.com/postgresql/postgresql_quiz.php "PostgreSQL Quizzes") [TypeScript](https://www.w3schools.com/typescript/typescript_exercises.php "TypeScript Exercises") [Exercise](https://www.w3schools.com/typescript/typescript_exercises.php "TypeScript Exercises") [Quiz](https://www.w3schools.com/typescript/typescript_quiz.php "TypeScript Quizzes") [Git](https://www.w3schools.com/git/git_exercises.asp "Git Exercises") [Exercise](https://www.w3schools.com/git/git_exercises.asp "Git Exercises") [Quiz](https://www.w3schools.com/git/git_quiz.asp "Git Quizzes") [Bash](https://www.w3schools.com/bash/bash_exercises.php "Bash Exercises") [Exercise](https://www.w3schools.com/bash/bash_exercises.php "Bash Exercises") [Quiz](https://www.w3schools.com/bash/bash_quiz.php "Bash Quizzes") [Go](https://www.w3schools.com/go/go_exercises.php "Go Exercises") [Exercise](https://www.w3schools.com/go/go_exercises.php "Go Exercises") [MongoDB](https://www.w3schools.com/mongodb/mongodb_exercises.php "MongoDB Exercises") [Exercise](https://www.w3schools.com/mongodb/mongodb_exercises.php "MongoDB Exercises") ### Data Analytics [DSA](https://www.w3schools.com/dsa/dsa_exercises.php "DSA Exercises") [Exercise](https://www.w3schools.com/dsa/dsa_exercises.php "DSA Exercises") [Quiz](https://www.w3schools.com/dsa/dsa_quiz.php "DSA Quizzes") [NumPy](https://www.w3schools.com/python/numpy/numpy_exercises.asp "NumPy Exercises") [Exercise](https://www.w3schools.com/python/numpy/numpy_exercises.asp "NumPy Exercises") [Quiz](https://www.w3schools.com/python/numpy/numpy_quiz.asp "NumPy Quizzes") [Pandas](https://www.w3schools.com/python/pandas/pandas_exercises.asp "Pandas Exercises") [Exercise](https://www.w3schools.com/python/pandas/pandas_exercises.asp "Pandas Exercises") [Quiz](https://www.w3schools.com/python/pandas/pandas_quiz.asp "Pandas Quizzes") [SciPy](https://www.w3schools.com/python/scipy/scipy_exercises.php "SciPy Exercises") [Exercise](https://www.w3schools.com/python/scipy/scipy_exercises.php "SciPy Exercises") [Quiz](https://www.w3schools.com/python/scipy/scipy_quiz.php "SciPy Quizzes") [Excel](https://www.w3schools.com/excel/excel_exercises.php "Excel Exercises") [Exercise](https://www.w3schools.com/excel/excel_exercises.php "Excel Exercises") [What is an Exercise?](https://www.w3schools.com/exercises/index.php "W3Schools Exercises") [What is a Quiz?](https://www.w3schools.com/quiztest/default.asp "W3Schools Quizzes") [What is a Code Challenge?](https://www.w3schools.com/challenges/index.php "W3Schools Code Challenges") × ## Certificates Filter field for certifications × ### HTML and CSS [HTML](https://campus.w3schools.com/collections/certifications/products/html-certificate "HTML Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/html-certificate "HTML Certification Exam") [Course](https://campus.w3schools.com/collections/course-catalog/products/html-course "Paid HTML Course") [Bootcamp](https://www.w3schools.com/bootcamp/html-css.php "HTML Bootcamp") [CSS](https://campus.w3schools.com/collections/certifications/products/css-certificate "CSS Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/css-certificate "CSS Certification Exam") [Course](https://campus.w3schools.com/collections/course-catalog/products/css-course "Paid CSS Course") [Bootcamp](https://www.w3schools.com/bootcamp/html-css.php "CSS Bootcamp") [Bootstrap 3](https://campus.w3schools.com/collections/certifications/products/bootstrap-3-certificate "Bootstrap 3 Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/bootstrap-3-certificate "Bootstrap 3 Certification Exam") [Course](https://campus.w3schools.com/collections/single-courses/products/bootstrap-course "Paid Bootstrap 3 Course") [Bootstrap 4](https://campus.w3schools.com/collections/certifications/products/bootstrap-4-certificate "Bootstrap 4 Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/bootstrap-4-certificate "Bootstrap 4 Certification Exam") [Course](https://campus.w3schools.com/collections/single-courses/products/bootstrap-4-course "Paid Bootstrap 4 Course") [Bootstrap 5](https://campus.w3schools.com/collections/certifications/products/bootstrap-5-certificate "Bootstrap 5 Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/bootstrap-5-certificate "Bootstrap 5 Certification Exam") ### Data Analytics [DSA](https://campus.w3schools.com/products/dsa-certification-exam "DSA Certificate Exam") [Certificate](https://campus.w3schools.com/products/dsa-certification-exam "DSA Certificate Exam") [Data Analytics](https://campus.w3schools.com/products/data-analytics-program "Paid Data Analytics Course") [Course](https://campus.w3schools.com/products/data-analytics-program "Paid Data Analytics Course") [NumPy](https://campus.w3schools.com/products/numpy-certification-exam "NumPy Certification Exam") [Certificate](https://campus.w3schools.com/products/numpy-certification-exam "NumPy Certification Exam") [Course](https://campus.w3schools.com/products/numpy-course "Paid NumPy Course") [Pandas](https://campus.w3schools.com/products/pandas-certification-exam "Pandas Certification Exam") [Certificate](https://campus.w3schools.com/products/pandas-certification-exam "Pandas Certification Exam") [Course](https://campus.w3schools.com/products/pandas-course "Paid Pandas Course") [Excel](https://campus.w3schools.com/products/excel-certificate "Excel Certification Exam") [Certificate](https://campus.w3schools.com/products/excel-certificate "Excel Certification Exam") [Social Media](https://campus.w3schools.com/collections/course-best-sellers/products/social-media-marketing-course "Paid Social Media Course") [Course](https://campus.w3schools.com/collections/course-best-sellers/products/social-media-marketing-course "Paid Social Media Course") [What is a Certificate?](https://campus.w3schools.com/ "W3Schools Campus") [What is a Bootcamp?](https://www.w3schools.com/bootcamp/index.php "W3Schools Bootcamps") ### Programs [Full Access Best Value\!](https://campus.w3schools.com/collections/course-catalog/products/w3schools-full-access-course "Paid Full Access Course") [Front End](https://campus.w3schools.com/collections/certifications/products/front-end-course "Paid Front End Course") [Certificate](https://campus.w3schools.com/collections/certifications/products/front-end-certificate "Front End Certification Exam") [Course](https://campus.w3schools.com/collections/course-catalog/products/front-end-course "Paid Front End Development Course") [Web Dev.](https://campus.w3schools.com/collections/certifications/products/modern-web-development-certification "Web Development Certification") [Certificate](https://campus.w3schools.com/collections/certifications/products/modern-web-development-certification "Web Development Certification") [Course](https://campus.w3schools.com/collections/course-best-sellers/products/learn-modern-web-development "Paid Web Development Course") [Web App](https://campus.w3schools.com/collections/certifications/products/web-application-development-certificates "Web Application Development Certification") [Certificate](https://campus.w3schools.com/collections/certifications/products/web-application-development-certificates "Web Application 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[Bootcamp](https://www.w3schools.com/bootcamp/javascript.php "JavaScript Bootcamp") [React](https://campus.w3schools.com/collections/certifications/products/react-js-certificate "React.js Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/react-js-certificate "React.js Certification Exam") [Course](https://campus.w3schools.com/collections/course-catalog/products/react-js-course "Paid React.js Course") [Bootcamp](https://www.w3schools.com/bootcamp/react.php "React Bootcamp") [jQuery](https://campus.w3schools.com/collections/certifications/products/jquery-certificate "jQuery Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/jquery-certificate "jQuery Certification Exam") [Course](https://campus.w3schools.com/collections/course-catalog/products/jquery-course "Paid jQuery Course") [Vue](https://campus.w3schools.com/products/vue-js-certification-exam "Vue Certification Exam") [Certificate](https://campus.w3schools.com/products/vue-js-certification-exam "Vue Certification Exam") ### Programs [Full Access Best Value\!](https://campus.w3schools.com/collections/course-catalog/products/w3schools-full-access-course "Paid Full Access Course") [Front End](https://campus.w3schools.com/collections/certifications/products/front-end-certificate "Front End Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/front-end-certificate "Front End Certification Exam") [Course](https://campus.w3schools.com/collections/course-catalog/products/front-end-course "Paid Front End Development Course") [Bootcamp](https://www.w3schools.com/bootcamp/web-development.php "Front End Development Bootcamp") [Web Dev.](https://campus.w3schools.com/collections/certifications/products/modern-web-development-certification "Web Development Certification") [Certificate](https://campus.w3schools.com/collections/certifications/products/modern-web-development-certification "Web Development Certification") [Course](https://campus.w3schools.com/collections/course-best-sellers/products/learn-modern-web-development "Paid Web Development Course") [Bootcamp](https://www.w3schools.com/bootcamp/web-development.php "Web Development Bootcamp") [Web App](https://campus.w3schools.com/collections/certifications/products/web-application-development-certificates "Web Application Development Certification") [Certificate](https://campus.w3schools.com/collections/certifications/products/web-application-development-certificates "Web Application Development Certification") [Course](https://campus.w3schools.com/collections/course-best-sellers/products/web-application-development-course "Paid Web Application Course") [Web Design](https://campus.w3schools.com/collections/certifications/products/web-design-certification "Web Design Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/web-design-certification "Web Design Certification Exam") [Course](https://campus.w3schools.com/collections/course-best-sellers/products/learn-web-design "Paid Web Design Course") ### Programs [Full Access Best Value\!](https://campus.w3schools.com/collections/course-catalog/products/w3schools-full-access-course "Paid Full Access Course") [Front End](https://campus.w3schools.com/collections/certifications/products/front-end-certificate "Front End Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/front-end-certificate "Front End Certification Exam") [Course](https://campus.w3schools.com/collections/course-catalog/products/front-end-course "Paid Front End Development Course") [Bootcamp](https://www.w3schools.com/bootcamp/web-development.php "Front End Development Bootcamp") [Web Dev.](https://campus.w3schools.com/collections/certifications/products/modern-web-development-certification "Web Development Certification") [Certificate](https://campus.w3schools.com/collections/certifications/products/modern-web-development-certification "Web Development Certification") [Course](https://campus.w3schools.com/collections/course-best-sellers/products/learn-modern-web-development "Paid Web Development Course") [Bootcamp](https://www.w3schools.com/bootcamp/web-development.php "Web Development Bootcamp") [Web App](https://campus.w3schools.com/collections/certifications/products/web-application-development-certificates "Web Application Development Certification") [Certificate](https://campus.w3schools.com/collections/certifications/products/web-application-development-certificates "Web Application Development Certification") [Course](https://campus.w3schools.com/collections/course-best-sellers/products/web-application-development-course "Paid Web Application Course") [Web Design](https://campus.w3schools.com/collections/certifications/products/web-design-certification "Web Design Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/web-design-certification "Web Design Certification Exam") [Course](https://campus.w3schools.com/collections/course-best-sellers/products/learn-web-design "Paid Web Design Course") ### Backend [Python](https://campus.w3schools.com/collections/certifications/products/python-certificate "Python Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/python-certificate "Python Certification Exam") [Course](https://campus.w3schools.com/collections/course-catalog/products/python-course "Paid Python Course") [Bootcamp](https://www.w3schools.com/bootcamp/python.php "Python Bootcamp") [SQL](https://campus.w3schools.com/collections/certifications/products/sql-certificate "SQL Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/sql-certificate "SQL Certification Exam") [Course](https://campus.w3schools.com/collections/course-catalog/products/sql-course "SQL Python Course") [Bootcamp](https://www.w3schools.com/bootcamp/sql.php "SQL Bootcamp") [MySQL](https://campus.w3schools.com/collections/certifications/products/mysql-certificate "MySQL Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/mysql-certificate "MySQL Certification Exam") [PHP](https://campus.w3schools.com/collections/certifications/products/php-certificate "PHP Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/php-certificate "PHP Certification Exam") [Course](https://campus.w3schools.com/collections/course-catalog/products/php-course "Paid PHP Course") [Java](https://campus.w3schools.com/collections/certifications/products/java-certificate "Java Certification Exam") 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[Certificate](https://campus.w3schools.com/collections/certifications/products/typescript-certificate "TypeScript Certification Exam") [Course](https://campus.w3schools.com/products/learn-typescript "Paid TypeScript Course") [XML](https://campus.w3schools.com/collections/certifications/products/xml-certificate "XML Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/xml-certificate "XML Certification Exam") [Course](https://campus.w3schools.com/collections/course-catalog/products/xml-course "Paid XML Course") [Cyber Security](https://campus.w3schools.com/collections/certifications/products/cyber-security-certificate "Cyber Security Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/cyber-security-certificate "Cyber Security Certification Exam") [Course](https://campus.w3schools.com/products/cyber-security-course "Paid Cyber Security Course") [Accessibility](https://campus.w3schools.com/collections/certifications/products/accessibility-certificate "Accessibility Certification Exam") [Certificate](https://campus.w3schools.com/collections/certifications/products/accessibility-certificate "Accessibility Certification Exam") [Course](https://campus.w3schools.com/products/accessibility-course "Paid Accessibility Course") ### Data Analytics [DSA](https://campus.w3schools.com/products/dsa-certification-exam "DSA Certification Exam") [Exam](https://campus.w3schools.com/products/dsa-certification-exam "DSA Certification Exam") [Data Analytics](https://campus.w3schools.com/products/data-analytics-program "Paid Data Analytics Course") [Course](https://campus.w3schools.com/products/data-analytics-program "Paid Data Analytics Course") [NumPy](https://campus.w3schools.com/products/numpy-course "Paid NumPy Course") [Course](https://campus.w3schools.com/products/numpy-course "Paid NumPy Course") [Pandas](https://campus.w3schools.com/products/pandas-course "Paid SciPy Course") [Course](https://campus.w3schools.com/products/pandas-course "Paid SciPy Course") [Excel](https://campus.w3schools.com/products/excel-certificate "Excel Certification Exam") [Certificate](https://campus.w3schools.com/products/excel-certificate "Excel Certification Exam") [Social Media](https://campus.w3schools.com/collections/course-best-sellers/products/social-media-marketing-course "Paid Social Media Course") [Course](https://campus.w3schools.com/collections/course-best-sellers/products/social-media-marketing-course "Paid Social Media Course") [What is a Certificate?](https://campus.w3schools.com/ "W3Schools Campus") × ## All Our Services Dark mode  Services filter input × W3Schools offers a wide range of services and products for beginners and professionals, helping millions of people everyday to learn and master new skills. 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Syntax](https://www.w3schools.com/c/c_syntax.php) [C Statements](https://www.w3schools.com/c/c_statements.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_syntax.php) [C Output](https://www.w3schools.com/c/c_output.php) [Print Text](https://www.w3schools.com/c/c_output.php) [New Lines](https://www.w3schools.com/c/c_newline.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_output.php) [C Comments](https://www.w3schools.com/c/c_comments.php) [C Variables](https://www.w3schools.com/c/c_variables.php) [Create Variables](https://www.w3schools.com/c/c_variables.php) [Format Specifiers](https://www.w3schools.com/c/c_variables_format.php) [Change Values](https://www.w3schools.com/c/c_variables_change.php) [Multiple Variables](https://www.w3schools.com/c/c_variables_multiple.php) [Variable Names](https://www.w3schools.com/c/c_variables_names.php) [Real-Life Examples](https://www.w3schools.com/c/c_variables_reallife.php) [Code 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[Assignment](https://www.w3schools.com/c/c_operators_assignment.php) [Comparison](https://www.w3schools.com/c/c_operators_comparison.php) [Logical](https://www.w3schools.com/c/c_operators_logical.php) [Precedence](https://www.w3schools.com/c/c_operators_precedence.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_operators.php) [C Booleans](https://www.w3schools.com/c/c_booleans.php) [Booleans](https://www.w3schools.com/c/c_booleans.php) [Real-Life Examples](https://www.w3schools.com/c/c_booleans_reallife.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_booleans.php) [C If...Else](https://www.w3schools.com/c/c_conditions.php) [if](https://www.w3schools.com/c/c_conditions.php) [else](https://www.w3schools.com/c/c_conditions_else.php) [else if](https://www.w3schools.com/c/c_conditions_elseif.php) [Short Hand If](https://www.w3schools.com/c/c_conditions_short_hand.php) [Nested If](https://www.w3schools.com/c/c_conditions_nested.php) [Logical Operators](https://www.w3schools.com/c/c_conditions_logical.php) [Real-Life Examples](https://www.w3schools.com/c/c_conditions_reallife.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_conditions.php) [C Switch](https://www.w3schools.com/c/c_switch.php) [Switch](https://www.w3schools.com/c/c_switch.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_switch.php) [C While Loop](https://www.w3schools.com/c/c_while_loop.php) [While Loop](https://www.w3schools.com/c/c_while_loop.php) [Do/While Loop](https://www.w3schools.com/c/c_do_while_loop.php) [Real-Life Examples](https://www.w3schools.com/c/c_while_loop_reallife.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_while_loop.php) [C For Loop](https://www.w3schools.com/c/c_for_loop.php) [For Loop](https://www.w3schools.com/c/c_for_loop.php) [Nested Loops](https://www.w3schools.com/c/c_for_loop_nested.php) [Real-Life Examples](https://www.w3schools.com/c/c_for_loop_reallife.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_for_loop.php) [C Break/Continue](https://www.w3schools.com/c/c_break_continue.php) [C Arrays](https://www.w3schools.com/c/c_arrays.php) [Arrays](https://www.w3schools.com/c/c_arrays.php) [Array Size](https://www.w3schools.com/c/c_arrays_size.php) [Array Loops](https://www.w3schools.com/c/c_arrays_loop.php) [Real-Life Examples](https://www.w3schools.com/c/c_arrays_reallife.php) [Multidimensional Arrays](https://www.w3schools.com/c/c_arrays_multi.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_arrays.php) [C Strings](https://www.w3schools.com/c/c_strings.php) [Strings](https://www.w3schools.com/c/c_strings.php) [Special Characters](https://www.w3schools.com/c/c_strings_esc.php) [String Functions](https://www.w3schools.com/c/c_strings_functions.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_strings.php) [C User Input](https://www.w3schools.com/c/c_user_input.php) [C Memory Address](https://www.w3schools.com/c/c_memory_address.php) [C Pointers](https://www.w3schools.com/c/c_pointers.php) [Pointers](https://www.w3schools.com/c/c_pointers.php) [Pointers & Arrays](https://www.w3schools.com/c/c_pointers_arrays.php) [Pointer Arithmetic](https://www.w3schools.com/c/c_pointers_arithmetic.php) [Pointer to Pointer](https://www.w3schools.com/c/c_pointer_to_pointer.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_pointers.php) ## C Functions [C Functions](https://www.w3schools.com/c/c_functions.php) [C Function Parameters](https://www.w3schools.com/c/c_functions_parameters.php) [C Scope](https://www.w3schools.com/c/c_scope.php) [C Function Declaration](https://www.w3schools.com/c/c_functions_decl.php) [C Functions Challenge](https://www.w3schools.com/c/c_challenges_functions.php) [C Math Functions](https://www.w3schools.com/c/c_math.php) [C Inline Functions](https://www.w3schools.com/c/c_functions_inline.php) [C Recursion](https://www.w3schools.com/c/c_functions_recursion.php) [C Function Pointers](https://www.w3schools.com/c/c_functions_pointers.php) [Function Pointers](https://www.w3schools.com/c/c_functions_pointers.php) [Callback Functions](https://www.w3schools.com/c/c_functions_callback.php) ## C Files [C Create Files](https://www.w3schools.com/c/c_files.php) [C Write To Files](https://www.w3schools.com/c/c_files_write.php) [C Read Files](https://www.w3schools.com/c/c_files_read.php) ## C Structures [C Structures](https://www.w3schools.com/c/c_structs.php) [C Structs Challenge](https://www.w3schools.com/c/c_challenges_structs.php) [C Nested Structures](https://www.w3schools.com/c/c_structs_nested.php) [C Structs & Pointers](https://www.w3schools.com/c/c_structs_pointers.php) [C Unions](https://www.w3schools.com/c/c_unions.php) [C typedef](https://www.w3schools.com/c/c_typedef.php) [C Struct Padding](https://www.w3schools.com/c/c_structs_padding.php) ## C Enums [C Enums](https://www.w3schools.com/c/c_enums.php) [Enums](https://www.w3schools.com/c/c_enums.php) [Code Challenge](https://www.w3schools.com/c/c_challenges_enums.php) ## C Memory [C Memory Management](https://www.w3schools.com/c/c_memory_management.php) [C Allocate Memory](https://www.w3schools.com/c/c_memory_allocate.php) [C Access Memory](https://www.w3schools.com/c/c_memory_access.php) [C Reallocate Memory](https://www.w3schools.com/c/c_memory_reallocate.php) [C Deallocate Memory](https://www.w3schools.com/c/c_memory_deallocate.php) [C Structs and Memory](https://www.w3schools.com/c/c_memory_struct.php) [C Memory Example](https://www.w3schools.com/c/c_memory_reallife.php) ## C Errors [C Errors](https://www.w3schools.com/c/c_errors.php) [C Error Challenge](https://www.w3schools.com/c/c_challenges_errors.php) [C Debugging](https://www.w3schools.com/c/c_debugging.php) [C NULL](https://www.w3schools.com/c/c_null.php) [C Error Handling](https://www.w3schools.com/c/c_error_handling.php) [C Input Validation](https://www.w3schools.com/c/c_input_validation.php) ## C More [C Date](https://www.w3schools.com/c/c_date_time.php) [C Random Numbers](https://www.w3schools.com/c/c_random_numbers.php) [C Macros](https://www.w3schools.com/c/c_macros.php) [C Organize Code](https://www.w3schools.com/c/c_organize_code.php) [C Storage Classes](https://www.w3schools.com/c/c_storage_classes.php) [C Bitwise Operators](https://www.w3schools.com/c/c_bitwise_operators.php) [C Fixed-width Integers](https://www.w3schools.com/c/c_fixed_width_ints.php) ## C Projects [C Projects](https://www.w3schools.com/c/c_projects.php) ## C Reference [C Reference](https://www.w3schools.com/c/c_ref_reference.php) [C Keywords](https://www.w3schools.com/c/c_ref_keywords.php) [C \<stdio.h\>](https://www.w3schools.com/c/c_ref_stdio.php) [C \<stdlib.h\>](https://www.w3schools.com/c/c_ref_stdlib.php) [C \<string.h\>](https://www.w3schools.com/c/c_ref_string.php) [C 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variables and values. In the example below, we use the `+` operator to add together two values: ### Example int myNum = 100 + 50; [Try it Yourself »](https://www.w3schools.com/c/tryc.php?filename=demo_oper) Although the `+` operator is often used to add together two values, like in the example above, it can also be used to add together a variable and a value, or a variable and another variable: ### Example int sum1 = 100 + 50; // 150 (100 + 50) int sum2 = sum1 + 250; // 400 (150 + 250) int sum3 = sum2 + sum2; // 800 (400 + 400) [Try it Yourself »](https://www.w3schools.com/c/tryc.php?filename=demo_oper2) C divides the operators into the following groups: - [Arithmetic operators](https://www.w3schools.com/c/c_operators_arithmetic.php) - [Assignment operators](https://www.w3schools.com/c/c_operators_assignment.php) - [Comparison operators](https://www.w3schools.com/c/c_operators_comparison.php) - [Logical operators](https://www.w3schools.com/c/c_operators_logical.php) - [Bitwise operators](https://www.w3schools.com/c/c_bitwise_operators.php) (advanced) * [REMOVE ADS](https://order.w3schools.com/plans) * [❮ Previous](https://www.w3schools.com/c/c_constants.php) [Next ❯](https://www.w3schools.com/c/c_operators_arithmetic.php) [★ +1](https://profile.w3schools.com/log-in?redirect_url=https%3A%2F%2Fwww.w3schools.com%2Fc%2Fc_operators.php "Your W3Schools Profile") [Sign in to track progress](https://profile.w3schools.com/log-in?redirect_url=https%3A%2F%2Fpathfinder.w3schools.com&origin=https%3A%2F%2Fwww.w3schools.com%2Fc%2Fc_operators.php "Sign in to track your progress") [![Get Certified Offer](https://www.w3schools.com/images/img_2026easter_course_300.webp)](https://campus.w3schools.com/collections/course-catalog) #### [COLOR PICKER](https://www.w3schools.com/colors/colors_picker.asp) [![colorpicker](https://www.w3schools.com/images/colorpicker2000.png)](https://www.w3schools.com/colors/colors_picker.asp) [REMOVE ADS](https://order.w3schools.com/plans) * [PLUS](https://order.w3schools.com/plans "Become a PLUS user and unlock powerful features") [SPACES](https://www.w3schools.com/spaces/index.php "Get your own website with W3Schools Spaces") [GET CERTIFIED](https://campus.w3schools.com/collections/certifications "Document your knowledge by getting certified") [FOR TEACHERS](https://www.w3schools.com/academy/index.php "Contact us about W3Schools Academy for educational institutions") [BOOTCAMPS](https://www.w3schools.com/bootcamp/index.php "W3Schools Bootcamps") [CONTACT US]("Contact us about sales or errors") × ## 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Readable Markdown	## C Operators * ## Operators Operators are used to perform operations on variables and values. In the example below, we use the `+` operator to add together two values: Although the `+` operator is often used to add together two values, like in the example above, it can also be used to add together a variable and a value, or a variable and another variable: ### Example int sum1 = 100 + 50; int sum2 = sum1 + 250; int sum3 = sum2 + sum2; [Try it Yourself »](https://www.w3schools.com/c/tryc.php?filename=demo_oper2) C divides the operators into the following groups: - [Arithmetic operators](https://www.w3schools.com/c/c_operators_arithmetic.php) - [Assignment operators](https://www.w3schools.com/c/c_operators_assignment.php) - [Comparison operators](https://www.w3schools.com/c/c_operators_comparison.php) - [Logical operators](https://www.w3schools.com/c/c_operators_logical.php) - [Bitwise operators](https://www.w3schools.com/c/c_bitwise_operators.php) (advanced) * ***
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