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[C++ Abstract Class](https://www.dremendo.com/cpp-programming-tutorial/cpp-abstract-class "C++ Abstract Class") - File Handling in C++ - [C++ Text File Handling](https://www.dremendo.com/cpp-programming-tutorial/cpp-text-file-handling "C++ Text File Handling") - [C++ Binary File Handling](https://www.dremendo.com/cpp-programming-tutorial/cpp-binary-file-handling "C++ Binary File Handling") # Conditional Operator in C++ Programming ###### Decision Making in C++ In this lesson, we will understand what is Conditional Operator, and how to use it in C++ programming. ## Conditional Operator Conditional Operator in C++ return one value if the condition is true and returns another value if the condition is false. This operator is also called a **Ternary Operator**.  ### Conditional Operator Syntax ``` (condition) ? true_value : false_value; ``` In the above syntax, we will write our **condition** in place of the condition if the **condition** is true then the true value will execute and if the **condition** is false then the false value will execute. Now let's see an example for more understanding. #### Example C++ program to find the greatest number among two integer variable's value using the conditional operator. ``` #include <iostream> #include <conio.h> using namespace std; int main() { int a=10,b=5,c; c=(a>b) ? a : b; cout<<"Greatest number is "<<c; return 0; } ``` #### Output ``` Greatest number is 10 ``` Here you can see that the condition **(a\>b)** is true so, the statement that is written just after the **?** marks will execute and the value of **a** gets stored in **c**. ## Nested Conditional Operator Nested Conditional Operators are possible by including conditional expression as a second (after **?**) or third part (after **:**) of the ternary operator. ### Nested Conditional Operator Syntax ``` (condition) ? ((condition) ? true_value : false_value) : false_value; (condition) ? true_value : ((condition) ? true_value : false_value); ``` In the above two syntaxes, on line number 1 you can clearly see that if the first condition is true then we are checking another condition just after the **?** mark of the first condition. In the same way on line number 2 if the first condition is true then the true value will execute and if it is false then we are checking another condition just after the **:** mark of the first condition. Now let's see an example for more understanding. #### Example C++ program to find the greatest number among 3 integer variable's value using the nested conditional operator. ``` #include <iostream> #include <conio.h> using namespace std; int main() { int a=10,b=50,c=26,g; c=(a>b && a>c) ? a : ((b>a && b>c) ? b : c); cout<<"Greatest number is "<<c; return 0; } ``` #### Output ``` Greatest number is 50 ``` Here you can see that the condition **(a\>b && a\>c)** is false so, we are checking another condition **(b\>a && b\>c)** that is written just after the **:** marks of the first condition and this time the condition is true so the value of **b** gets stored in **c**. 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###### Decision Making in C++ In this lesson, we will understand what is Conditional Operator, and how to use it in C++ programming. ## Conditional Operator Conditional Operator in C++ return one value if the condition is true and returns another value if the condition is false. This operator is also called a **Ternary Operator**.  ### Conditional Operator Syntax ``` (condition) ? true_value : false_value; ``` In the above syntax, we will write our **condition** in place of the condition if the **condition** is true then the true value will execute and if the **condition** is false then the false value will execute. Now let's see an example for more understanding. #### Example C++ program to find the greatest number among two integer variable's value using the conditional operator. ``` #include <iostream> #include <conio.h> using namespace std; int main() { int a=10,b=5,c; c=(a>b) ? a : b; cout<<"Greatest number is "<<c; return 0; } ``` #### Output ``` Greatest number is 10 ``` Here you can see that the condition **(a\>b)** is true so, the statement that is written just after the **?** marks will execute and the value of **a** gets stored in **c**. ## Nested Conditional Operator Nested Conditional Operators are possible by including conditional expression as a second (after **?**) or third part (after **:**) of the ternary operator. ### Nested Conditional Operator Syntax ``` (condition) ? ((condition) ? true_value : false_value) : false_value; (condition) ? true_value : ((condition) ? true_value : false_value); ``` In the above two syntaxes, on line number 1 you can clearly see that if the first condition is true then we are checking another condition just after the **?** mark of the first condition. In the same way on line number 2 if the first condition is true then the true value will execute and if it is false then we are checking another condition just after the **:** mark of the first condition. Now let's see an example for more understanding. #### Example C++ program to find the greatest number among 3 integer variable's value using the nested conditional operator. ``` #include <iostream> #include <conio.h> using namespace std; int main() { int a=10,b=50,c=26,g; c=(a>b && a>c) ? a : ((b>a && b>c) ? b : c); cout<<"Greatest number is "<<c; return 0; } ``` #### Output ``` Greatest number is 50 ``` Here you can see that the condition **(a\>b && a\>c)** is false so, we are checking another condition **(b\>a && b\>c)** that is written just after the **:** marks of the first condition and this time the condition is true so the value of **b** gets stored in **c**.