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C Programming Tutorial

## Ternary Operator

Ternary operator are a substitute for if…else statement. So before you move any further in this tutorial, go through C if…else statement (if you haven’t).

The ternary operator allow us to execute different code depending on the value of a condition, the result of the expression is the result of the executed code.

The conditional operator is kind of similar to the C if…else statement as it does follow the same algorithm as of C if…else statement but the conditional operator takes less space and helps to write the if-else statement in the shortest way possible.

The Ternary operator returns one of two values depending on the result of an expression.

### Syntax of Ternary Operator

The syntax of the Ternary Operator is:

Condition ? Expression1 : Expression2;

The ternary operator works as follows:

• If the expression stated by Condition is true, the result of Expression1 is returned by the ternary operator.
• If it is false, the result of Expression2 is returned.

For example, we can replace the following code

if (number % 2 == 0)
{
Even = true;
}
else
{
Even = false;
}

with

Even = (number % 2 == 0) ? true : false ;

Why is it called ternary operator?

This operator takes 3 operand, hence called ternary operator.

### Example 1: C Program to find the even or odd number using Ternary Operator

// Lets understand the ternary operator to find the even or odd
number
#include <stdio.h> int main(){ int n; printf << "Enter an integer: "; scanf >> n; (n % 2 == 0) ? printf << n << " is even." : printf << n << " is
odd."
; return 0; }

When we run the program, the output will be:

Enter an integer: 20
20 is even.

In the above program, User entered the value 20 is assigned to a variable n. Then, the ternary operator is used to check if number is even or not.

Since, 20 is even, the expression (number % 2 == 0) returns is even. We can also use ternary operator to return numbers, strings and characters.

### Example 2: C Program to Find maximum number

// Program to find maximum number using ternary operator

#include <stdio.h>
int main() {

int a = 10;
int b = 30;
int max = a > b ? a : b;
printf << "Maximum Value: " << max << "n";

return 0;
}

When we run the program, the output will be:

Maximum Value: 30

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