Ternary Operator / Conditional Operator In C

In this video tutorial we will show you how to use Conditional Operator. They are also called Ternary Operators as they take 3 arguments.

General Form of Ternary Operator

(expression_1) ? (expression_2) : (expression_3);

expression_1 is a comparison/conditional argument. expression_2 is executed/returned if expression_1 results in true, expression_3 gets executed/returned if expression_1 is false.

Ternary operator / Conditional Operator can be assumed to be shortened way of writing an if-else statement.

C Program: Ternary Operator / Conditional Operator

 
#include < stdio.h >

int main()
{
    int a = 1, b = 1, c;

    // (expression1) ? (expression2) : (expression3);

     (a+b) ? (c = 10) : (c = 20);

    printf("Value of C is %d\n", c);

    return 0;
}

Output:
Value of C is 10

a+b is 2 which is non-zero, so it is considered as true. So c = 10 gets executed.

 
#include < stdio.h >

int main()
{
    int a = 1, b = 1, c;

    // (expression1) ? (expression2) : (expression3);

     (a-b) ? (c = 10) : (c = 20);

    printf("Value of C is %d\n", c);

    return 0;
}

Output:
Value of C is 20

a-b is 0 which is zero, so it is considered as false. So c = 20 gets executed.

 
#include < stdio.h >

int main()
{
    int a = 1, b = 1, c;

    // (expression1) ? (expression2) : (expression3);

    c = (a+b) ? (10) : (20);

    printf("Value of C is %d\n", c);

    return 0;
}

Output:
Value of C is 10

 
#include < stdio.h >

int main()
{
    int a = 1, b = 1, c;

    // (expression1) ? (expression2) : (expression3);

    c = (a-b) ? (10) : (20);

    printf("Value of C is %d\n", c);

    return 0;
}

Output:
Value of C is 20

Ternary Operator / Conditional Operator In C

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