Conditional Operator in C

By | February 18, 2023

Prerequisite – Operators in C
The conditional operator in C is a ternary operator that is used to evaluate a boolean expression and return one of two values depending on whether the expression is true or false.

Syntax:
The syntax of the conditional operator is as follows:

condition ? value_if_true : value_if_false;

Here, condition is a boolean expression that is evaluated. If the condition is true, then the value of value_if_true is returned, otherwise the value of value_if_false is returned.

Example:
Here’s an example code that demonstrates the use of the conditional operator in C:

#include <stdio.h>

int main() {
    int a = 10, b = 5, c;
    
    c = (a > b) ? a : b;
    printf("The larger number is: %d\n", c);
    
    return 0;
}

In this example, we declare three integer variables a, b, and c. We then use the conditional operator to assign the larger of the two numbers a and b to c. The boolean expression a > b is evaluated, and if it is true, the value of a is returned, otherwise the value of b is returned. The result is then assigned to c, which is printed to the console.

The output of this program will be:

The larger number is: 10

As you can see, the value of c is assigned the value of a (10), since a is greater than b (5).

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Author: Mithlesh Upadhyay

Mithlesh Upadhyay is a Computer Science and AI expert from Madhya Pradesh with strong academic background (BE in CSE and M.Tech in AI) and over six years of experience in technical content development. He has contributed tech articles, led teams, and worked in Full Stack Development and Data Science. He founded the w3colleges.org portal for learning resources.