Integers that are perfectly divisible by 2 are called even numbers.
And those integers that are not perfectly divisible by 2 are not known as odd numbers.
To check whether an integer is even or odd, the remainder is calculated when it is divided by 2 using modulus operator %. If the remainder is zero, that integer is even if not that integer is odd.
Example 1: Check Whether Number is Even or Odd using if else
Output
Enter an integer: 23 23 is odd.
In this program, an if..else statement is used to check whether n % 2 == 0 is true or not.
If this expression is true, n is even. Else, n is odd.
You can also use ternary operators ?: instead of if..else statement. The ternary operator is a shorthand notation of if...else statement.