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# C++ Program to Check Whether Number is Even or Odd ## In this example, the if…else statement is used to check even or odd and whether a number entered by the user is even or odd.

To understand Check Even or Odd program, you should have the knowledge of following C++ programming topics:
• C++ if, if…else and Nested if…else

Integers which are perfectly divisible by 2 are called even numbers.

And those integers which are not perfectly divisible by 2 are not known as an odd number.

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.

#### Program to Check Whether Number is Even or Odd using if else

```#include <iostream>
using namespace std;

int main()
{
int n;

cout << "Enter an integer: ";
cin >> n;

if ( n % 2 == 0)
cout << n << " is even.";
else
cout << n << " is odd.";

return 0;
}```

Output

```Enter an integer: 23
23 is odd.```

In this program, the if..else statement is used to check whether `n%2 == 0` is true or not. If this expression is true, n is even if not n is odd.

You can also use ternary operators ?: instead of the if..else statement. The ternary operator is shorthand notation for if…else statement.

[irp]

#### Program to Check Whether Number is Even or Odd using ternary operators

```#include<iostream>

using namespace std;

int main()
{
int a;

cout<<"Enter the Number : ";
cin>>a;

(a%2==0)?cout<<"Number is even":cout<<"Number is odd";

return 0;
}```

Output

```Enter the Number: 56
Number is even```

[irp]

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