C++ Program To Check Number Is Even Or Odd Using If/Else Statements

In this tutorial, we will that how we can find if any number is even or not with the help of if-else statements.

Program To Check Number Is Even Or Odd Using If/Else Statements In C++

Example 1: If entered number is an even number.

Let value of 'a' entered is 8

if(a%2==0) then a is an even number, else odd.

i.e. if(8%2==0) then 8 is an even number, else odd.

To check whether 8 is even or odd, we need to calculate (8%2).

/* % (modulus) implies remainder value. */

/* Therefore if the remainder obtained when 8 is divided by 2 is 0, then 8 is even. */

8%2==0 is true

Thus 8 is an even number.

Example 2: If entered number is an odd number.

Let value of 'a' entered is 7

if(a%2==0) then a is an even number, else odd.

i.e. if(7%2==0) then 4 is an even number, else odd.

To check whether 7 is even or odd, we need to calculate (7%2).

7%2==0 is false /* 7%2==1 condition fails and else part is executed */

Thus 7 is an odd number.

#include<bits/stdc++.h>
using namespace std;

void check_number(int num){
    if(num%2==0){
        cout<<num<<" is an even number";
    }
    else{
        cout<<num<<" is an odd number";
    }
}

int main(){
    int num;
    cout<<"Enter the number you want to check:-";
    cin>>num;
    check_number(num);
    return 0;
}

Enter the number you want to check:-
8
8 is an even number

Conclusion

Here, we have how to implement the C++ code for checking whether the number given by the user is an even or an odd number.