🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 14 (from laksa093)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa014.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://cplusplus.com/reference/queue/queue/push/\')), getAhrefsUnparsedNoserviceFromURL(\'https://cplusplus.com/reference/queue/queue/push/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/cplusplus.com\/reference\/queue\/queue\/push\/","crawl_time":1773999000,"first_indexed_time":1654746042,"http_code":200,"src_unparsed":"com,cplusplus!\/reference\/queue\/queue\/push\/ s443","src_root_hash":"7671136614093794214","history_drop_reason":null,"meta_title":"","meta_descriptions":[],"attrs_boilerpipe_text":"public member function\n<queue>\nstd::\nqueue\n::push\nC++98\nC++11\nvoid push (const value_type& val);\nvoid push (const value_type& val);void push (value_type&& val);\nInsert element\nInserts a new element at the end of the\nqueue\n, after its current last element. The content of this new element is initialized to\nval\n.\nThis member function effectively calls the member function\npush_back\nof the\nunderlying container\nobject.\nParameters\nval\nValue to which the inserted element is initialized.\nMember type\nvalue_type\nis the type of the elements in the container (defined as an alias of the first class template parameter,\nT\n).\nReturn value\nnone\nExample\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n\/\/ queue::push\/pop\n#include <iostream>\n\/\/ std::cin, std::cout\n#include <queue>\n\/\/ std::queue\nint\nmain ()\n{\n  std::queue<\nint\n> myqueue;\nint\nmyint;\n\n  std::cout <<\n\"Please enter some integers (enter 0 to end):\\n\"\n;\ndo\n{\n    std::cin >> myint;\n    myqueue.push (myint);\n  }\nwhile\n(myint);\n\n  std::cout <<\n\"myqueue contains: \"\n;\nwhile\n(!myqueue.empty())\n  {\n    std::cout <<\n' '\n<< myqueue.front();\n    myqueue.pop();\n  }\n  std::cout <<\n'\\n'\n;\nreturn\n0;\n}\nThe example uses\npush\nto add a new elements to the queue, which are then popped out in the same order.\nComplexity\nOne call to\npush_back\non the\nunderlying container\n.\nData races\nThe container and up to all its contained elements are modified.\nException safety\nProvides the same level of guarantees as the operation performed on the\nunderlying container\nobject.\nSee also\nqueue::pop\nRemove next element\n(public member function)\nqueue::size\nReturn size\n(public member function)","attrs_markdown":"[cplusplus .com](https:\/\/cplusplus.com\/)\n\n- [TUTORIALS](https:\/\/cplusplus.com\/doc\/)\n- [REFERENCE](https:\/\/cplusplus.com\/reference\/)\n- [ARTICLES](https:\/\/cplusplus.com\/articles\/)\n- [FORUM](https:\/\/cplusplus.com\/forum\/)\n\n![](https:\/\/cplusplus.com\/img\/progress.gif)  \nplease wait\n\n[try again]() [cancel]()\n\n[forgot your password?](https:\/\/cplusplus.com\/user\/access.cgi?w=lostpass)\n\n[sign up](https:\/\/cplusplus.com\/user\/access.cgi?w=signup) [log in]()  \n[\\[Legacy version\\]](https:\/\/legacy.cplusplus.com\/reference\/queue\/queue\/push\/)\n\n### **[C++](https:\/\/cplusplus.com\/)**\n- [Tutorials](https:\/\/cplusplus.com\/doc\/)\n- [Reference](https:\/\/cplusplus.com\/reference\/)\n- [Articles](https:\/\/cplusplus.com\/articles\/)\n- [Forum](https:\/\/cplusplus.com\/forum\/)\n\n### **[Reference](https:\/\/cplusplus.com\/reference\/)**\n- #### [C library:](https:\/\/cplusplus.com\/reference\/clibrary\/)\n  - [\\<cassert\\> (assert.h)](https:\/\/cplusplus.com\/reference\/cassert\/ \"<cassert> (assert.h)\")\n  - [\\<cctype\\> (ctype.h)](https:\/\/cplusplus.com\/reference\/cctype\/ \"<cctype> (ctype.h)\")\n  - [\\<cerrno\\> (errno.h)](https:\/\/cplusplus.com\/reference\/cerrno\/ \"<cerrno> (errno.h)\")\n  - C++11\n    [\\<cfenv\\> (fenv.h)](https:\/\/cplusplus.com\/reference\/cfenv\/ \"<cfenv> (fenv.h)\")\n  - [\\<cfloat\\> (float.h)](https:\/\/cplusplus.com\/reference\/cfloat\/ \"<cfloat> (float.h)\")\n  - C++11\n    [\\<cinttypes\\> (inttypes.h)](https:\/\/cplusplus.com\/reference\/cinttypes\/ \"<cinttypes> (inttypes.h)\")\n  - [\\<ciso646\\> (iso646.h)](https:\/\/cplusplus.com\/reference\/ciso646\/ \"<ciso646> (iso646.h)\")\n  - [\\<climits\\> (limits.h)](https:\/\/cplusplus.com\/reference\/climits\/ \"<climits> (limits.h)\")\n  - [\\<clocale\\> (locale.h)](https:\/\/cplusplus.com\/reference\/clocale\/ \"<clocale> (locale.h)\")\n  - [\\<cmath\\> (math.h)](https:\/\/cplusplus.com\/reference\/cmath\/ \"<cmath> (math.h)\")\n  - [\\<csetjmp\\> (setjmp.h)](https:\/\/cplusplus.com\/reference\/csetjmp\/ \"<csetjmp> (setjmp.h)\")\n  - [\\<csignal\\> (signal.h)](https:\/\/cplusplus.com\/reference\/csignal\/ \"<csignal> (signal.h)\")\n  - [\\<cstdarg\\> (stdarg.h)](https:\/\/cplusplus.com\/reference\/cstdarg\/ \"<cstdarg> (stdarg.h)\")\n  - C++11\n    [\\<cstdbool\\> (stdbool.h)](https:\/\/cplusplus.com\/reference\/cstdbool\/ \"<cstdbool> (stdbool.h)\")\n  - [\\<cstddef\\> (stddef.h)](https:\/\/cplusplus.com\/reference\/cstddef\/ \"<cstddef> (stddef.h)\")\n  - C++11\n    [\\<cstdint\\> (stdint.h)](https:\/\/cplusplus.com\/reference\/cstdint\/ \"<cstdint> (stdint.h)\")\n  - [\\<cstdio\\> (stdio.h)](https:\/\/cplusplus.com\/reference\/cstdio\/ \"<cstdio> (stdio.h)\")\n  - [\\<cstdlib\\> (stdlib.h)](https:\/\/cplusplus.com\/reference\/cstdlib\/ \"<cstdlib> (stdlib.h)\")\n  - [\\<cstring\\> (string.h)](https:\/\/cplusplus.com\/reference\/cstring\/ \"<cstring> (string.h)\")\n  - C++11\n    [\\<ctgmath\\> (tgmath.h)](https:\/\/cplusplus.com\/reference\/ctgmath\/ \"<ctgmath> (tgmath.h)\")\n  - [\\<ctime\\> (time.h)](https:\/\/cplusplus.com\/reference\/ctime\/ \"<ctime> (time.h)\")\n  - C++11\n    [\\<cuchar\\> (uchar.h)](https:\/\/cplusplus.com\/reference\/cuchar\/ \"<cuchar> (uchar.h)\")\n  - [\\<cwchar\\> (wchar.h)](https:\/\/cplusplus.com\/reference\/cwchar\/ \"<cwchar> (wchar.h)\")\n  - [\\<cwctype\\> (wctype.h)](https:\/\/cplusplus.com\/reference\/cwctype\/ \"<cwctype> (wctype.h)\")\n- #### [Containers:](https:\/\/cplusplus.com\/reference\/stl\/)\n  - C++11\n    [\\<array\\>](https:\/\/cplusplus.com\/reference\/array\/ \"<array>\")\n  - [\\<deque\\>](https:\/\/cplusplus.com\/reference\/deque\/ \"<deque>\")\n  - C++11\n    [\\<forward\\_list\\>](https:\/\/cplusplus.com\/reference\/forward_list\/ \"<forward_list>\")\n  - [\\<list\\>](https:\/\/cplusplus.com\/reference\/list\/ \"<list>\")\n  - [\\<map\\>](https:\/\/cplusplus.com\/reference\/map\/ \"<map>\")\n  - [\\<queue\\>](https:\/\/cplusplus.com\/reference\/queue\/ \"<queue>\")\n  - [\\<set\\>](https:\/\/cplusplus.com\/reference\/set\/ \"<set>\")\n  - [\\<stack\\>](https:\/\/cplusplus.com\/reference\/stack\/ \"<stack>\")\n  - C++11\n    [\\<unordered\\_map\\>](https:\/\/cplusplus.com\/reference\/unordered_map\/ \"<unordered_map>\")\n  - C++11\n    [\\<unordered\\_set\\>](https:\/\/cplusplus.com\/reference\/unordered_set\/ \"<unordered_set>\")\n  - [\\<vector\\>](https:\/\/cplusplus.com\/reference\/vector\/ \"<vector>\")\n- #### [Input\/Output:](https:\/\/cplusplus.com\/reference\/iolibrary\/)\n  - [\\<fstream\\>](https:\/\/cplusplus.com\/reference\/fstream\/ \"<fstream>\")\n  - [\\<iomanip\\>](https:\/\/cplusplus.com\/reference\/iomanip\/ \"<iomanip>\")\n  - [\\<ios\\>](https:\/\/cplusplus.com\/reference\/ios\/ \"<ios>\")\n  - [\\<iosfwd\\>](https:\/\/cplusplus.com\/reference\/iosfwd\/ \"<iosfwd>\")\n  - [\\<iostream\\>](https:\/\/cplusplus.com\/reference\/iostream\/ \"<iostream>\")\n  - [\\<istream\\>](https:\/\/cplusplus.com\/reference\/istream\/ \"<istream>\")\n  - [\\<ostream\\>](https:\/\/cplusplus.com\/reference\/ostream\/ \"<ostream>\")\n  - [\\<sstream\\>](https:\/\/cplusplus.com\/reference\/sstream\/ \"<sstream>\")\n  - [\\<streambuf\\>](https:\/\/cplusplus.com\/reference\/streambuf\/ \"<streambuf>\")\n- #### [Multi-threading:](https:\/\/cplusplus.com\/reference\/multithreading\/)\n  - C++11\n    [\\<atomic\\>](https:\/\/cplusplus.com\/reference\/atomic\/ \"<atomic>\")\n  - C++11\n    [\\<condition\\_variable\\>](https:\/\/cplusplus.com\/reference\/condition_variable\/ \"<condition_variable>\")\n  - C++11\n    [\\<future\\>](https:\/\/cplusplus.com\/reference\/future\/ \"<future>\")\n  - C++11\n    [\\<mutex\\>](https:\/\/cplusplus.com\/reference\/mutex\/ \"<mutex>\")\n  - C++11\n    [\\<thread\\>](https:\/\/cplusplus.com\/reference\/thread\/ \"<thread>\")\n- #### [Other:](https:\/\/cplusplus.com\/reference\/std\/)\n  - [\\<algorithm\\>](https:\/\/cplusplus.com\/reference\/algorithm\/ \"<algorithm>\")\n  - [\\<bitset\\>](https:\/\/cplusplus.com\/reference\/bitset\/ \"<bitset>\")\n  - C++11\n    [\\<chrono\\>](https:\/\/cplusplus.com\/reference\/chrono\/ \"<chrono>\")\n  - C++11\n    [\\<codecvt\\>](https:\/\/cplusplus.com\/reference\/codecvt\/ \"<codecvt>\")\n  - [\\<complex\\>](https:\/\/cplusplus.com\/reference\/complex\/ \"<complex>\")\n  - [\\<exception\\>](https:\/\/cplusplus.com\/reference\/exception\/ \"<exception>\")\n  - [\\<functional\\>](https:\/\/cplusplus.com\/reference\/functional\/ \"<functional>\")\n  - C++11\n    [\\<initializer\\_list\\>](https:\/\/cplusplus.com\/reference\/initializer_list\/ \"<initializer_list>\")\n  - [\\<iterator\\>](https:\/\/cplusplus.com\/reference\/iterator\/ \"<iterator>\")\n  - [\\<limits\\>](https:\/\/cplusplus.com\/reference\/limits\/ \"<limits>\")\n  - [\\<locale\\>](https:\/\/cplusplus.com\/reference\/locale\/ \"<locale>\")\n  - [\\<memory\\>](https:\/\/cplusplus.com\/reference\/memory\/ \"<memory>\")\n  - [\\<new\\>](https:\/\/cplusplus.com\/reference\/new\/ \"<new>\")\n  - [\\<numeric\\>](https:\/\/cplusplus.com\/reference\/numeric\/ \"<numeric>\")\n  - C++11\n    [\\<random\\>](https:\/\/cplusplus.com\/reference\/random\/ \"<random>\")\n  - C++11\n    [\\<ratio\\>](https:\/\/cplusplus.com\/reference\/ratio\/ \"<ratio>\")\n  - C++11\n    [\\<regex\\>](https:\/\/cplusplus.com\/reference\/regex\/ \"<regex>\")\n  - [\\<stdexcept\\>](https:\/\/cplusplus.com\/reference\/stdexcept\/ \"<stdexcept>\")\n  - [\\<string\\>](https:\/\/cplusplus.com\/reference\/string\/ \"<string>\")\n  - C++11\n    [\\<system\\_error\\>](https:\/\/cplusplus.com\/reference\/system_error\/ \"<system_error>\")\n  - C++11\n    [\\<tuple\\>](https:\/\/cplusplus.com\/reference\/tuple\/ \"<tuple>\")\n  - C++11\n    [\\<type\\_traits\\>](https:\/\/cplusplus.com\/reference\/type_traits\/ \"<type_traits>\")\n  - C++11\n    [\\<typeindex\\>](https:\/\/cplusplus.com\/reference\/typeindex\/ \"<typeindex>\")\n  - [\\<typeinfo\\>](https:\/\/cplusplus.com\/reference\/typeinfo\/ \"<typeinfo>\")\n  - [\\<utility\\>](https:\/\/cplusplus.com\/reference\/utility\/ \"<utility>\")\n  - [\\<valarray\\>](https:\/\/cplusplus.com\/reference\/valarray\/ \"<valarray>\")\n\n- [\\<algorithm\\>](https:\/\/cplusplus.com\/reference\/algorithm\/ \"<algorithm>\")\n- [\\<bitset\\>](https:\/\/cplusplus.com\/reference\/bitset\/ \"<bitset>\")\n- [\\<cassert\\> (assert.h)](https:\/\/cplusplus.com\/reference\/cassert\/ \"<cassert> (assert.h)\")\n- [\\<cctype\\> (ctype.h)](https:\/\/cplusplus.com\/reference\/cctype\/ \"<cctype> (ctype.h)\")\n- [\\<cerrno\\> (errno.h)](https:\/\/cplusplus.com\/reference\/cerrno\/ \"<cerrno> (errno.h)\")\n- [\\<cfloat\\> (float.h)](https:\/\/cplusplus.com\/reference\/cfloat\/ \"<cfloat> (float.h)\")\n- [\\<ciso646\\> (iso646.h)](https:\/\/cplusplus.com\/reference\/ciso646\/ \"<ciso646> (iso646.h)\")\n- [\\<climits\\> (limits.h)](https:\/\/cplusplus.com\/reference\/climits\/ \"<climits> (limits.h)\")\n- [\\<clocale\\> (locale.h)](https:\/\/cplusplus.com\/reference\/clocale\/ \"<clocale> (locale.h)\")\n- [\\<cmath\\> (math.h)](https:\/\/cplusplus.com\/reference\/cmath\/ \"<cmath> (math.h)\")\n- [\\<complex\\>](https:\/\/cplusplus.com\/reference\/complex\/ \"<complex>\")\n- [\\<csetjmp\\> (setjmp.h)](https:\/\/cplusplus.com\/reference\/csetjmp\/ \"<csetjmp> (setjmp.h)\")\n- [\\<csignal\\> (signal.h)](https:\/\/cplusplus.com\/reference\/csignal\/ \"<csignal> (signal.h)\")\n- [\\<cstdarg\\> (stdarg.h)](https:\/\/cplusplus.com\/reference\/cstdarg\/ \"<cstdarg> (stdarg.h)\")\n- [\\<cstddef\\> (stddef.h)](https:\/\/cplusplus.com\/reference\/cstddef\/ \"<cstddef> (stddef.h)\")\n- [\\<cstdio\\> (stdio.h)](https:\/\/cplusplus.com\/reference\/cstdio\/ \"<cstdio> (stdio.h)\")\n- [\\<cstdlib\\> (stdlib.h)](https:\/\/cplusplus.com\/reference\/cstdlib\/ \"<cstdlib> (stdlib.h)\")\n- [\\<cstring\\> (string.h)](https:\/\/cplusplus.com\/reference\/cstring\/ \"<cstring> (string.h)\")\n- [\\<ctime\\> (time.h)](https:\/\/cplusplus.com\/reference\/ctime\/ \"<ctime> (time.h)\")\n- [\\<cwchar\\> (wchar.h)](https:\/\/cplusplus.com\/reference\/cwchar\/ \"<cwchar> (wchar.h)\")\n- [\\<cwctype\\> (wctype.h)](https:\/\/cplusplus.com\/reference\/cwctype\/ \"<cwctype> (wctype.h)\")\n- [\\<deque\\>](https:\/\/cplusplus.com\/reference\/deque\/ \"<deque>\")\n- [\\<exception\\>](https:\/\/cplusplus.com\/reference\/exception\/ \"<exception>\")\n- [\\<fstream\\>](https:\/\/cplusplus.com\/reference\/fstream\/ \"<fstream>\")\n- [\\<functional\\>](https:\/\/cplusplus.com\/reference\/functional\/ \"<functional>\")\n- [\\<iomanip\\>](https:\/\/cplusplus.com\/reference\/iomanip\/ \"<iomanip>\")\n- [\\<ios\\>](https:\/\/cplusplus.com\/reference\/ios\/ \"<ios>\")\n- [\\<iosfwd\\>](https:\/\/cplusplus.com\/reference\/iosfwd\/ \"<iosfwd>\")\n- [\\<iostream\\>](https:\/\/cplusplus.com\/reference\/iostream\/ \"<iostream>\")\n- [\\<istream\\>](https:\/\/cplusplus.com\/reference\/istream\/ \"<istream>\")\n- [\\<iterator\\>](https:\/\/cplusplus.com\/reference\/iterator\/ \"<iterator>\")\n- [\\<limits\\>](https:\/\/cplusplus.com\/reference\/limits\/ \"<limits>\")\n- [\\<list\\>](https:\/\/cplusplus.com\/reference\/list\/ \"<list>\")\n- [\\<locale\\>](https:\/\/cplusplus.com\/reference\/locale\/ \"<locale>\")\n- [\\<map\\>](https:\/\/cplusplus.com\/reference\/map\/ \"<map>\")\n- [\\<memory\\>](https:\/\/cplusplus.com\/reference\/memory\/ \"<memory>\")\n- [\\<new\\>](https:\/\/cplusplus.com\/reference\/new\/ \"<new>\")\n- [\\<numeric\\>](https:\/\/cplusplus.com\/reference\/numeric\/ \"<numeric>\")\n- [\\<ostream\\>](https:\/\/cplusplus.com\/reference\/ostream\/ \"<ostream>\")\n- [\\<queue\\>](https:\/\/cplusplus.com\/reference\/queue\/ \"<queue>\")\n- [\\<set\\>](https:\/\/cplusplus.com\/reference\/set\/ \"<set>\")\n- [\\<sstream\\>](https:\/\/cplusplus.com\/reference\/sstream\/ \"<sstream>\")\n- [\\<stack\\>](https:\/\/cplusplus.com\/reference\/stack\/ \"<stack>\")\n- [\\<stdexcept\\>](https:\/\/cplusplus.com\/reference\/stdexcept\/ \"<stdexcept>\")\n- [\\<streambuf\\>](https:\/\/cplusplus.com\/reference\/streambuf\/ \"<streambuf>\")\n- [\\<string\\>](https:\/\/cplusplus.com\/reference\/string\/ \"<string>\")\n- [\\<typeinfo\\>](https:\/\/cplusplus.com\/reference\/typeinfo\/ \"<typeinfo>\")\n- [\\<utility\\>](https:\/\/cplusplus.com\/reference\/utility\/ \"<utility>\")\n- [\\<valarray\\>](https:\/\/cplusplus.com\/reference\/valarray\/ \"<valarray>\")\n- [\\<vector\\>](https:\/\/cplusplus.com\/reference\/vector\/ \"<vector>\")\n- C++11\n  [\\<array\\>](https:\/\/cplusplus.com\/reference\/array\/ \"<array>\")\n- C++11\n  [\\<atomic\\>](https:\/\/cplusplus.com\/reference\/atomic\/ \"<atomic>\")\n- C++11\n  [\\<cfenv\\> (fenv.h)](https:\/\/cplusplus.com\/reference\/cfenv\/ \"<cfenv> (fenv.h)\")\n- C++11\n  [\\<chrono\\>](https:\/\/cplusplus.com\/reference\/chrono\/ \"<chrono>\")\n- C++11\n  [\\<cinttypes\\> (inttypes.h)](https:\/\/cplusplus.com\/reference\/cinttypes\/ \"<cinttypes> (inttypes.h)\")\n- C++11\n  [\\<codecvt\\>](https:\/\/cplusplus.com\/reference\/codecvt\/ \"<codecvt>\")\n- C++11\n  [\\<condition\\_variable\\>](https:\/\/cplusplus.com\/reference\/condition_variable\/ \"<condition_variable>\")\n- C++11\n  [\\<cstdbool\\> (stdbool.h)](https:\/\/cplusplus.com\/reference\/cstdbool\/ \"<cstdbool> (stdbool.h)\")\n- C++11\n  [\\<cstdint\\> (stdint.h)](https:\/\/cplusplus.com\/reference\/cstdint\/ \"<cstdint> (stdint.h)\")\n- C++11\n  [\\<ctgmath\\> (tgmath.h)](https:\/\/cplusplus.com\/reference\/ctgmath\/ \"<ctgmath> (tgmath.h)\")\n- C++11\n  [\\<cuchar\\> (uchar.h)](https:\/\/cplusplus.com\/reference\/cuchar\/ \"<cuchar> (uchar.h)\")\n- C++11\n  [\\<forward\\_list\\>](https:\/\/cplusplus.com\/reference\/forward_list\/ \"<forward_list>\")\n- C++11\n  [\\<future\\>](https:\/\/cplusplus.com\/reference\/future\/ \"<future>\")\n- C++11\n  [\\<initializer\\_list\\>](https:\/\/cplusplus.com\/reference\/initializer_list\/ \"<initializer_list>\")\n- C++11\n  [\\<mutex\\>](https:\/\/cplusplus.com\/reference\/mutex\/ \"<mutex>\")\n- C++11\n  [\\<random\\>](https:\/\/cplusplus.com\/reference\/random\/ \"<random>\")\n- C++11\n  [\\<ratio\\>](https:\/\/cplusplus.com\/reference\/ratio\/ \"<ratio>\")\n- C++11\n  [\\<regex\\>](https:\/\/cplusplus.com\/reference\/regex\/ \"<regex>\")\n- C++11\n  [\\<system\\_error\\>](https:\/\/cplusplus.com\/reference\/system_error\/ \"<system_error>\")\n- C++11\n  [\\<thread\\>](https:\/\/cplusplus.com\/reference\/thread\/ \"<thread>\")\n- C++11\n  [\\<tuple\\>](https:\/\/cplusplus.com\/reference\/tuple\/ \"<tuple>\")\n- C++11\n  [\\<type\\_traits\\>](https:\/\/cplusplus.com\/reference\/type_traits\/ \"<type_traits>\")\n- C++11\n  [\\<typeindex\\>](https:\/\/cplusplus.com\/reference\/typeindex\/ \"<typeindex>\")\n- C++11\n  [\\<unordered\\_map\\>](https:\/\/cplusplus.com\/reference\/unordered_map\/ \"<unordered_map>\")\n- C++11\n  [\\<unordered\\_set\\>](https:\/\/cplusplus.com\/reference\/unordered_set\/ \"<unordered_set>\")\n\n### **[\\<queue\\>](https:\/\/cplusplus.com\/reference\/queue\/)**\n- [priority\\_queue](https:\/\/cplusplus.com\/reference\/queue\/priority_queue\/ \"priority_queue\")\n- [queue](https:\/\/cplusplus.com\/reference\/queue\/queue\/ \"queue\")\n\n### **[queue](https:\/\/cplusplus.com\/reference\/queue\/queue\/)**\n- [queue::queue](https:\/\/cplusplus.com\/reference\/queue\/queue\/queue\/ \"queue::queue\")\n- #### member functions\n  - [queue::back](https:\/\/cplusplus.com\/reference\/queue\/queue\/back\/ \"queue::back\")\n  - C++11\n    [queue::emplace](https:\/\/cplusplus.com\/reference\/queue\/queue\/emplace\/ \"queue::emplace\")\n  - [queue::empty](https:\/\/cplusplus.com\/reference\/queue\/queue\/empty\/ \"queue::empty\")\n  - [queue::front](https:\/\/cplusplus.com\/reference\/queue\/queue\/front\/ \"queue::front\")\n  - [queue::pop](https:\/\/cplusplus.com\/reference\/queue\/queue\/pop\/ \"queue::pop\")\n  - [queue::push](https:\/\/cplusplus.com\/reference\/queue\/queue\/push\/ \"queue::push\")\n  - [queue::size](https:\/\/cplusplus.com\/reference\/queue\/queue\/size\/ \"queue::size\")\n  - C++11\n    [queue::swap](https:\/\/cplusplus.com\/reference\/queue\/queue\/swap\/ \"queue::swap\")\n- #### non-member overloads\n  - [relational operators (queue)](https:\/\/cplusplus.com\/reference\/queue\/queue\/operators\/ \"relational operators (queue)\")\n  - C++11\n    [swap (queue)](https:\/\/cplusplus.com\/reference\/queue\/queue\/swap-free\/ \"swap (queue)\")\n- #### non-member specializations\n  - C++11\n    [uses\\_allocator\\<queue\\>](https:\/\/cplusplus.com\/reference\/queue\/queue\/uses_allocator\/ \"uses_allocator<queue>\")\n\n- C++11\n  [queue::emplace](https:\/\/cplusplus.com\/reference\/queue\/queue\/emplace\/ \"queue::emplace\")\n- C++11\n  [queue::swap](https:\/\/cplusplus.com\/reference\/queue\/queue\/swap\/ \"queue::swap\")\n- C++11\n  [swap (queue)](https:\/\/cplusplus.com\/reference\/queue\/queue\/swap-free\/ \"swap (queue)\")\n- C++11\n  [uses\\_allocator\\<queue\\>](https:\/\/cplusplus.com\/reference\/queue\/queue\/uses_allocator\/ \"uses_allocator<queue>\")\n- [queue::back](https:\/\/cplusplus.com\/reference\/queue\/queue\/back\/ \"queue::back\")\n- [queue::empty](https:\/\/cplusplus.com\/reference\/queue\/queue\/empty\/ \"queue::empty\")\n- [queue::front](https:\/\/cplusplus.com\/reference\/queue\/queue\/front\/ \"queue::front\")\n- [queue::pop](https:\/\/cplusplus.com\/reference\/queue\/queue\/pop\/ \"queue::pop\")\n- [queue::push](https:\/\/cplusplus.com\/reference\/queue\/queue\/push\/ \"queue::push\")\n- [queue::queue](https:\/\/cplusplus.com\/reference\/queue\/queue\/queue\/ \"queue::queue\")\n- [queue::size](https:\/\/cplusplus.com\/reference\/queue\/queue\/size\/ \"queue::size\")\n- [relational operators (queue)](https:\/\/cplusplus.com\/reference\/queue\/queue\/operators\/ \"relational operators (queue)\")\n\n- [Reference](https:\/\/cplusplus.com\/reference\/)\n- [\\<queue\\>](https:\/\/cplusplus.com\/reference\/queue\/)\n- [queue](https:\/\/cplusplus.com\/reference\/queue\/queue\/)\n- push\n\npublic member function\n\n\\<queue\\>\n\n# std::[queue](https:\/\/cplusplus.com\/reference\/queue\/queue\/)::push\n- [C++98]()\n- [C++11]()\n```\nvoid push (const value_type& val);\n```\n```\nvoid push (const value_type& val);void push (value_type&& val);\n```\n\nInsert element\n\nInserts a new element at the end of the\n\n[queue](https:\/\/cplusplus.com\/queue)\n\n, after its current last element. The content of this new element is initialized to\n\nval\n\n.  \n   \n This member function effectively calls the member function\n\n[push\\_back](https:\/\/cplusplus.com\/deque::push_back)\n\nof the *underlying container* object.\n\n### Parameters\nval\n\nValue to which the inserted element is initialized.  \n Member type\n\nvalue\\_type\n\nis the type of the elements in the container (defined as an alias of the first class template parameter,\n\nT\n\n).\n\n### Return value\nnone\n\n### Example\n[Edit & run on cpp.sh](https:\/\/cplusplus.com\/reference\/queue\/queue\/push\/ \"Open C++ Shell (in a new window)\")\n\nThe example uses\n\npush\n\nto add a new elements to the queue, which are then popped out in the same order.\n\n### Complexity\nOne call to\n\n[push\\_back](https:\/\/cplusplus.com\/deque::push_back)\n\non the *underlying container*.\n\n### Data races\nThe container and up to all its contained elements are modified.\n\n### Exception safety\nProvides the same level of guarantees as the operation performed on the *underlying container* object.\n\n### See also\n[**queue::pop**](https:\/\/cplusplus.com\/reference\/queue\/queue\/pop\/)\n\nRemove next element (public member function)\n\n[**queue::size**](https:\/\/cplusplus.com\/reference\/queue\/queue\/size\/)\n\nReturn size (public member function)\n\n[Home page](https:\/\/cplusplus.com\/) \\| [Privacy policy](https:\/\/cplusplus.com\/privacy.do)  \n© cplusplus.com, 2000-2025 - All rights reserved - *v3.3.4s*   \n[Spotted an error? contact us](https:\/\/cplusplus.com\/contact.do?referrer=%2Freference%2Fqueue%2Fqueue%2Fpush%2F)","attrs_readable_markdown":null,"meta_canonical":null}

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Boilerpipe Text	public member function <queue> std:: queue ::push C++98 C++11 void push (const value_type& val); void push (const value_type& val);void push (value_type&& val); Insert element Inserts a new element at the end of the queue , after its current last element. The content of this new element is initialized to val . This member function effectively calls the member function push_back of the underlying container object. Parameters val Value to which the inserted element is initialized. Member type value_type is the type of the elements in the container (defined as an alias of the first class template parameter, T ). Return value none Example 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 // queue::push/pop #include <iostream> // std::cin, std::cout #include <queue> // std::queue int main () { std::queue< int > myqueue; int myint; std::cout << "Please enter some integers (enter 0 to end):\n" ; do { std::cin >> myint; myqueue.push (myint); } while (myint); std::cout << "myqueue contains: " ; while (!myqueue.empty()) { std::cout << ' ' << myqueue.front(); myqueue.pop(); } std::cout << '\n' ; return 0; } The example uses push to add a new elements to the queue, which are then popped out in the same order. Complexity One call to push_back on the underlying container . Data races The container and up to all its contained elements are modified. Exception safety Provides the same level of guarantees as the operation performed on the underlying container object. See also queue::pop Remove next element (public member function) queue::size Return size (public member function)
Markdown	[cplusplus .com](https://cplusplus.com/) - [TUTORIALS](https://cplusplus.com/doc/) - [REFERENCE](https://cplusplus.com/reference/) - [ARTICLES](https://cplusplus.com/articles/) - [FORUM](https://cplusplus.com/forum/) ![](https://cplusplus.com/img/progress.gif) please wait [try again]() [cancel]() [forgot your password?](https://cplusplus.com/user/access.cgi?w=lostpass) [sign up](https://cplusplus.com/user/access.cgi?w=signup) [log in]() [\[Legacy version\]](https://legacy.cplusplus.com/reference/queue/queue/push/) ### [C++](https://cplusplus.com/) - [Tutorials](https://cplusplus.com/doc/) - [Reference](https://cplusplus.com/reference/) - [Articles](https://cplusplus.com/articles/) - [Forum](https://cplusplus.com/forum/) ### [Reference](https://cplusplus.com/reference/) - #### [C library:](https://cplusplus.com/reference/clibrary/) - [\<cassert\> (assert.h)](https://cplusplus.com/reference/cassert/ "<cassert> (assert.h)") - [\<cctype\> (ctype.h)](https://cplusplus.com/reference/cctype/ "<cctype> (ctype.h)") - [\<cerrno\> (errno.h)](https://cplusplus.com/reference/cerrno/ "<cerrno> (errno.h)") - C++11 [\<cfenv\> (fenv.h)](https://cplusplus.com/reference/cfenv/ "<cfenv> (fenv.h)") - [\<cfloat\> (float.h)](https://cplusplus.com/reference/cfloat/ "<cfloat> (float.h)") - C++11 [\<cinttypes\> (inttypes.h)](https://cplusplus.com/reference/cinttypes/ "<cinttypes> (inttypes.h)") - [\<ciso646\> (iso646.h)](https://cplusplus.com/reference/ciso646/ "<ciso646> (iso646.h)") - [\<climits\> (limits.h)](https://cplusplus.com/reference/climits/ "<climits> (limits.h)") - [\<clocale\> (locale.h)](https://cplusplus.com/reference/clocale/ "<clocale> (locale.h)") - [\<cmath\> (math.h)](https://cplusplus.com/reference/cmath/ "<cmath> (math.h)") - [\<csetjmp\> (setjmp.h)](https://cplusplus.com/reference/csetjmp/ "<csetjmp> (setjmp.h)") - [\<csignal\> (signal.h)](https://cplusplus.com/reference/csignal/ "<csignal> (signal.h)") - [\<cstdarg\> (stdarg.h)](https://cplusplus.com/reference/cstdarg/ "<cstdarg> (stdarg.h)") - C++11 [\<cstdbool\> (stdbool.h)](https://cplusplus.com/reference/cstdbool/ "<cstdbool> (stdbool.h)") - [\<cstddef\> (stddef.h)](https://cplusplus.com/reference/cstddef/ "<cstddef> (stddef.h)") - C++11 [\<cstdint\> (stdint.h)](https://cplusplus.com/reference/cstdint/ "<cstdint> (stdint.h)") - [\<cstdio\> (stdio.h)](https://cplusplus.com/reference/cstdio/ "<cstdio> (stdio.h)") - [\<cstdlib\> (stdlib.h)](https://cplusplus.com/reference/cstdlib/ "<cstdlib> (stdlib.h)") - [\<cstring\> (string.h)](https://cplusplus.com/reference/cstring/ "<cstring> (string.h)") - C++11 [\<ctgmath\> (tgmath.h)](https://cplusplus.com/reference/ctgmath/ "<ctgmath> (tgmath.h)") - [\<ctime\> (time.h)](https://cplusplus.com/reference/ctime/ "<ctime> (time.h)") - C++11 [\<cuchar\> (uchar.h)](https://cplusplus.com/reference/cuchar/ "<cuchar> (uchar.h)") - [\<cwchar\> (wchar.h)](https://cplusplus.com/reference/cwchar/ "<cwchar> (wchar.h)") - [\<cwctype\> (wctype.h)](https://cplusplus.com/reference/cwctype/ "<cwctype> (wctype.h)") - #### [Containers:](https://cplusplus.com/reference/stl/) - C++11 [\<array\>](https://cplusplus.com/reference/array/ "<array>") - [\<deque\>](https://cplusplus.com/reference/deque/ "<deque>") - C++11 [\<forward\_list\>](https://cplusplus.com/reference/forward_list/ "<forward_list>") - [\<list\>](https://cplusplus.com/reference/list/ "<list>") - [\<map\>](https://cplusplus.com/reference/map/ "<map>") - [\<queue\>](https://cplusplus.com/reference/queue/ "<queue>") - [\<set\>](https://cplusplus.com/reference/set/ "<set>") - [\<stack\>](https://cplusplus.com/reference/stack/ "<stack>") - C++11 [\<unordered\_map\>](https://cplusplus.com/reference/unordered_map/ "<unordered_map>") - C++11 [\<unordered\_set\>](https://cplusplus.com/reference/unordered_set/ "<unordered_set>") - [\<vector\>](https://cplusplus.com/reference/vector/ "<vector>") - #### [Input/Output:](https://cplusplus.com/reference/iolibrary/) - [\<fstream\>](https://cplusplus.com/reference/fstream/ "<fstream>") - [\<iomanip\>](https://cplusplus.com/reference/iomanip/ "<iomanip>") - [\<ios\>](https://cplusplus.com/reference/ios/ "<ios>") - [\<iosfwd\>](https://cplusplus.com/reference/iosfwd/ "<iosfwd>") - [\<iostream\>](https://cplusplus.com/reference/iostream/ "<iostream>") - [\<istream\>](https://cplusplus.com/reference/istream/ "<istream>") - [\<ostream\>](https://cplusplus.com/reference/ostream/ "<ostream>") - [\<sstream\>](https://cplusplus.com/reference/sstream/ "<sstream>") - [\<streambuf\>](https://cplusplus.com/reference/streambuf/ "<streambuf>") - #### [Multi-threading:](https://cplusplus.com/reference/multithreading/) - C++11 [\<atomic\>](https://cplusplus.com/reference/atomic/ "<atomic>") - C++11 [\<condition\_variable\>](https://cplusplus.com/reference/condition_variable/ "<condition_variable>") - C++11 [\<future\>](https://cplusplus.com/reference/future/ "<future>") - C++11 [\<mutex\>](https://cplusplus.com/reference/mutex/ "<mutex>") - C++11 [\<thread\>](https://cplusplus.com/reference/thread/ "<thread>") - #### [Other:](https://cplusplus.com/reference/std/) - [\<algorithm\>](https://cplusplus.com/reference/algorithm/ "<algorithm>") - [\<bitset\>](https://cplusplus.com/reference/bitset/ "<bitset>") - C++11 [\<chrono\>](https://cplusplus.com/reference/chrono/ "<chrono>") - C++11 [\<codecvt\>](https://cplusplus.com/reference/codecvt/ "<codecvt>") - [\<complex\>](https://cplusplus.com/reference/complex/ "<complex>") - [\<exception\>](https://cplusplus.com/reference/exception/ "<exception>") - [\<functional\>](https://cplusplus.com/reference/functional/ "<functional>") - C++11 [\<initializer\_list\>](https://cplusplus.com/reference/initializer_list/ "<initializer_list>") - [\<iterator\>](https://cplusplus.com/reference/iterator/ "<iterator>") - [\<limits\>](https://cplusplus.com/reference/limits/ "<limits>") - [\<locale\>](https://cplusplus.com/reference/locale/ "<locale>") - [\<memory\>](https://cplusplus.com/reference/memory/ "<memory>") - [\<new\>](https://cplusplus.com/reference/new/ "<new>") - [\<numeric\>](https://cplusplus.com/reference/numeric/ "<numeric>") - C++11 [\<random\>](https://cplusplus.com/reference/random/ "<random>") - C++11 [\<ratio\>](https://cplusplus.com/reference/ratio/ "<ratio>") - C++11 [\<regex\>](https://cplusplus.com/reference/regex/ "<regex>") - [\<stdexcept\>](https://cplusplus.com/reference/stdexcept/ "<stdexcept>") - [\<string\>](https://cplusplus.com/reference/string/ "<string>") - C++11 [\<system\_error\>](https://cplusplus.com/reference/system_error/ "<system_error>") - C++11 [\<tuple\>](https://cplusplus.com/reference/tuple/ "<tuple>") - C++11 [\<type\_traits\>](https://cplusplus.com/reference/type_traits/ "<type_traits>") - C++11 [\<typeindex\>](https://cplusplus.com/reference/typeindex/ "<typeindex>") - [\<typeinfo\>](https://cplusplus.com/reference/typeinfo/ "<typeinfo>") - [\<utility\>](https://cplusplus.com/reference/utility/ "<utility>") - [\<valarray\>](https://cplusplus.com/reference/valarray/ "<valarray>") - [\<algorithm\>](https://cplusplus.com/reference/algorithm/ "<algorithm>") - [\<bitset\>](https://cplusplus.com/reference/bitset/ "<bitset>") - [\<cassert\> (assert.h)](https://cplusplus.com/reference/cassert/ "<cassert> (assert.h)") - [\<cctype\> (ctype.h)](https://cplusplus.com/reference/cctype/ "<cctype> (ctype.h)") - [\<cerrno\> (errno.h)](https://cplusplus.com/reference/cerrno/ "<cerrno> (errno.h)") - [\<cfloat\> (float.h)](https://cplusplus.com/reference/cfloat/ "<cfloat> (float.h)") - [\<ciso646\> (iso646.h)](https://cplusplus.com/reference/ciso646/ "<ciso646> (iso646.h)") - [\<climits\> (limits.h)](https://cplusplus.com/reference/climits/ "<climits> (limits.h)") - [\<clocale\> (locale.h)](https://cplusplus.com/reference/clocale/ "<clocale> (locale.h)") - [\<cmath\> (math.h)](https://cplusplus.com/reference/cmath/ "<cmath> (math.h)") - [\<complex\>](https://cplusplus.com/reference/complex/ "<complex>") - [\<csetjmp\> (setjmp.h)](https://cplusplus.com/reference/csetjmp/ "<csetjmp> (setjmp.h)") - [\<csignal\> (signal.h)](https://cplusplus.com/reference/csignal/ "<csignal> (signal.h)") - [\<cstdarg\> (stdarg.h)](https://cplusplus.com/reference/cstdarg/ "<cstdarg> (stdarg.h)") - [\<cstddef\> (stddef.h)](https://cplusplus.com/reference/cstddef/ "<cstddef> (stddef.h)") - [\<cstdio\> (stdio.h)](https://cplusplus.com/reference/cstdio/ "<cstdio> (stdio.h)") - [\<cstdlib\> (stdlib.h)](https://cplusplus.com/reference/cstdlib/ "<cstdlib> (stdlib.h)") - [\<cstring\> (string.h)](https://cplusplus.com/reference/cstring/ "<cstring> (string.h)") - [\<ctime\> (time.h)](https://cplusplus.com/reference/ctime/ "<ctime> (time.h)") - [\<cwchar\> (wchar.h)](https://cplusplus.com/reference/cwchar/ "<cwchar> (wchar.h)") - [\<cwctype\> (wctype.h)](https://cplusplus.com/reference/cwctype/ "<cwctype> (wctype.h)") - [\<deque\>](https://cplusplus.com/reference/deque/ "<deque>") - [\<exception\>](https://cplusplus.com/reference/exception/ "<exception>") - [\<fstream\>](https://cplusplus.com/reference/fstream/ "<fstream>") - [\<functional\>](https://cplusplus.com/reference/functional/ "<functional>") - [\<iomanip\>](https://cplusplus.com/reference/iomanip/ "<iomanip>") - [\<ios\>](https://cplusplus.com/reference/ios/ "<ios>") - [\<iosfwd\>](https://cplusplus.com/reference/iosfwd/ "<iosfwd>") - [\<iostream\>](https://cplusplus.com/reference/iostream/ "<iostream>") - [\<istream\>](https://cplusplus.com/reference/istream/ "<istream>") - [\<iterator\>](https://cplusplus.com/reference/iterator/ "<iterator>") - [\<limits\>](https://cplusplus.com/reference/limits/ "<limits>") - [\<list\>](https://cplusplus.com/reference/list/ "<list>") - [\<locale\>](https://cplusplus.com/reference/locale/ "<locale>") - [\<map\>](https://cplusplus.com/reference/map/ "<map>") - [\<memory\>](https://cplusplus.com/reference/memory/ "<memory>") - [\<new\>](https://cplusplus.com/reference/new/ "<new>") - [\<numeric\>](https://cplusplus.com/reference/numeric/ "<numeric>") - [\<ostream\>](https://cplusplus.com/reference/ostream/ "<ostream>") - [\<queue\>](https://cplusplus.com/reference/queue/ "<queue>") - [\<set\>](https://cplusplus.com/reference/set/ "<set>") - [\<sstream\>](https://cplusplus.com/reference/sstream/ "<sstream>") - [\<stack\>](https://cplusplus.com/reference/stack/ "<stack>") - [\<stdexcept\>](https://cplusplus.com/reference/stdexcept/ "<stdexcept>") - [\<streambuf\>](https://cplusplus.com/reference/streambuf/ "<streambuf>") - [\<string\>](https://cplusplus.com/reference/string/ "<string>") - [\<typeinfo\>](https://cplusplus.com/reference/typeinfo/ "<typeinfo>") - [\<utility\>](https://cplusplus.com/reference/utility/ "<utility>") - [\<valarray\>](https://cplusplus.com/reference/valarray/ "<valarray>") - [\<vector\>](https://cplusplus.com/reference/vector/ "<vector>") - C++11 [\<array\>](https://cplusplus.com/reference/array/ "<array>") - C++11 [\<atomic\>](https://cplusplus.com/reference/atomic/ "<atomic>") - C++11 [\<cfenv\> (fenv.h)](https://cplusplus.com/reference/cfenv/ "<cfenv> (fenv.h)") - C++11 [\<chrono\>](https://cplusplus.com/reference/chrono/ "<chrono>") - C++11 [\<cinttypes\> (inttypes.h)](https://cplusplus.com/reference/cinttypes/ "<cinttypes> (inttypes.h)") - C++11 [\<codecvt\>](https://cplusplus.com/reference/codecvt/ "<codecvt>") - C++11 [\<condition\_variable\>](https://cplusplus.com/reference/condition_variable/ "<condition_variable>") - C++11 [\<cstdbool\> (stdbool.h)](https://cplusplus.com/reference/cstdbool/ "<cstdbool> (stdbool.h)") - C++11 [\<cstdint\> (stdint.h)](https://cplusplus.com/reference/cstdint/ "<cstdint> (stdint.h)") - C++11 [\<ctgmath\> (tgmath.h)](https://cplusplus.com/reference/ctgmath/ "<ctgmath> (tgmath.h)") - C++11 [\<cuchar\> (uchar.h)](https://cplusplus.com/reference/cuchar/ "<cuchar> (uchar.h)") - C++11 [\<forward\_list\>](https://cplusplus.com/reference/forward_list/ "<forward_list>") - C++11 [\<future\>](https://cplusplus.com/reference/future/ "<future>") - C++11 [\<initializer\_list\>](https://cplusplus.com/reference/initializer_list/ "<initializer_list>") - C++11 [\<mutex\>](https://cplusplus.com/reference/mutex/ "<mutex>") - C++11 [\<random\>](https://cplusplus.com/reference/random/ "<random>") - C++11 [\<ratio\>](https://cplusplus.com/reference/ratio/ "<ratio>") - C++11 [\<regex\>](https://cplusplus.com/reference/regex/ "<regex>") - C++11 [\<system\_error\>](https://cplusplus.com/reference/system_error/ "<system_error>") - C++11 [\<thread\>](https://cplusplus.com/reference/thread/ "<thread>") - C++11 [\<tuple\>](https://cplusplus.com/reference/tuple/ "<tuple>") - C++11 [\<type\_traits\>](https://cplusplus.com/reference/type_traits/ "<type_traits>") - C++11 [\<typeindex\>](https://cplusplus.com/reference/typeindex/ "<typeindex>") - C++11 [\<unordered\_map\>](https://cplusplus.com/reference/unordered_map/ "<unordered_map>") - C++11 [\<unordered\_set\>](https://cplusplus.com/reference/unordered_set/ "<unordered_set>") ### [\<queue\>](https://cplusplus.com/reference/queue/) - [priority\_queue](https://cplusplus.com/reference/queue/priority_queue/ "priority_queue") - [queue](https://cplusplus.com/reference/queue/queue/ "queue") ### [queue](https://cplusplus.com/reference/queue/queue/) - [queue::queue](https://cplusplus.com/reference/queue/queue/queue/ "queue::queue") - #### member functions - [queue::back](https://cplusplus.com/reference/queue/queue/back/ "queue::back") - C++11 [queue::emplace](https://cplusplus.com/reference/queue/queue/emplace/ "queue::emplace") - [queue::empty](https://cplusplus.com/reference/queue/queue/empty/ "queue::empty") - [queue::front](https://cplusplus.com/reference/queue/queue/front/ "queue::front") - [queue::pop](https://cplusplus.com/reference/queue/queue/pop/ "queue::pop") - [queue::push](https://cplusplus.com/reference/queue/queue/push/ "queue::push") - [queue::size](https://cplusplus.com/reference/queue/queue/size/ "queue::size") - C++11 [queue::swap](https://cplusplus.com/reference/queue/queue/swap/ "queue::swap") - #### non-member overloads - [relational operators (queue)](https://cplusplus.com/reference/queue/queue/operators/ "relational operators (queue)") - C++11 [swap (queue)](https://cplusplus.com/reference/queue/queue/swap-free/ "swap (queue)") - #### non-member specializations - C++11 [uses\_allocator\<queue\>](https://cplusplus.com/reference/queue/queue/uses_allocator/ "uses_allocator<queue>") - C++11 [queue::emplace](https://cplusplus.com/reference/queue/queue/emplace/ "queue::emplace") - C++11 [queue::swap](https://cplusplus.com/reference/queue/queue/swap/ "queue::swap") - C++11 [swap (queue)](https://cplusplus.com/reference/queue/queue/swap-free/ "swap (queue)") - C++11 [uses\_allocator\<queue\>](https://cplusplus.com/reference/queue/queue/uses_allocator/ "uses_allocator<queue>") - [queue::back](https://cplusplus.com/reference/queue/queue/back/ "queue::back") - [queue::empty](https://cplusplus.com/reference/queue/queue/empty/ "queue::empty") - [queue::front](https://cplusplus.com/reference/queue/queue/front/ "queue::front") - [queue::pop](https://cplusplus.com/reference/queue/queue/pop/ "queue::pop") - [queue::push](https://cplusplus.com/reference/queue/queue/push/ "queue::push") - [queue::queue](https://cplusplus.com/reference/queue/queue/queue/ "queue::queue") - [queue::size](https://cplusplus.com/reference/queue/queue/size/ "queue::size") - [relational operators (queue)](https://cplusplus.com/reference/queue/queue/operators/ "relational operators (queue)") - [Reference](https://cplusplus.com/reference/) - [\<queue\>](https://cplusplus.com/reference/queue/) - [queue](https://cplusplus.com/reference/queue/queue/) - push public member function \<queue\> # std::[queue](https://cplusplus.com/reference/queue/queue/)::push - [C++98]() - [C++11]() ``` void push (const value_type& val); ``` ``` void push (const value_type& val);void push (value_type&& val); ``` Insert element Inserts a new element at the end of the [queue](https://cplusplus.com/queue) , after its current last element. The content of this new element is initialized to val . This member function effectively calls the member function [push\_back](https://cplusplus.com/deque::push_back) of the underlying container object. ### Parameters val Value to which the inserted element is initialized. Member type value\_type is the type of the elements in the container (defined as an alias of the first class template parameter, T ). ### Return value none ### Example [Edit & run on cpp.sh](https://cplusplus.com/reference/queue/queue/push/ "Open C++ Shell (in a new window)") The example uses push to add a new elements to the queue, which are then popped out in the same order. ### Complexity One call to [push\_back](https://cplusplus.com/deque::push_back) on the underlying container. ### Data races The container and up to all its contained elements are modified. ### Exception safety Provides the same level of guarantees as the operation performed on the underlying container object. ### See also [queue::pop](https://cplusplus.com/reference/queue/queue/pop/) Remove next element (public member function) [queue::size](https://cplusplus.com/reference/queue/queue/size/) Return size (public member function) [Home page](https://cplusplus.com/) \\| [Privacy policy](https://cplusplus.com/privacy.do) © cplusplus.com, 2000-2025 - All rights reserved - v3.3.4s [Spotted an error? contact us](https://cplusplus.com/contact.do?referrer=%2Freference%2Fqueue%2Fqueue%2Fpush%2F)
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