Articles

C++ program to print odd and even numbers

C++ program to print odd and even numbers


In this chapter of C++ program tutorial out task is to: 

  • Write a C++ program to find if a number is even or odd.

C++ program to find a number is even or odd

METHOD 1:

Below is the C++ program to find a number is even or odd

#include<iostream>
using namespace std;
int main()
{
        int n;
        cout<<"Enter the number:"<<endl;
        cin>>n;
        if(n%2==0)     // or we can use (n%2!=1)
        {
            cout<<"The number is EVEN."<<endl;
        }
        else
        {
            cout<<"The number is ODD."<<endl;
        }
        return 0;
}

OUTPUT :

Enter the number:
5

The number is ODD.

 
EXPLANATION :
In the above program:
  • The execution starts from the main function (here int main()).
  • A 4 bit memory space is created for the integer 'n' (assuming 64 bit system).
  • Then the number is taking as the input.
  • The condition for "Even" or "Odd" is executed through the if statement. 
  • Then the number is diplayed as "Even" or "Odd".
  • The program than gives the desired output and terminates in the line "return 0" returning a 0 value.

WORKING :

a = 5

if(5%2==0)    // This returns a false value so it will move to the else statement and execute the statement

 

You can see the above code execution and output in codeblocks IDE:

c++ program to find the number is even or odd


METHOD 2: (using bitwise AND)

Below is the C++ program to find a number is even or odd

#include<iostream>
using namespace std;
int main()
{
        int n;
        cout<<"Enter the number:"<<endl;
        cin>>n;
        if(n&1)
        {
            cout<<"The number is ODD."<<endl;
        }
        else
        {
            cout<<"The number is EVEN."<<endl;
        }
        return 0;
}

OUTPUT :

Enter the number:
5

The number is ODD.

 

EXPLANATION :

In the above program:
  • The execution starts from the main function (here int main()).
  • A 4 bit memory space is created for the integer 'n' (assuming 64 bit system).
  • Then the number is taking as the input.
  • The condition for "Even" or "Odd" is executed through the if statement. 
  • Then the number is diplayed as "Even" or "Odd".
  • The program than gives the desired output and terminates in the line "return 0" returning a 0 value.

WORKING :

a = 5
if(a&1)      // 0101 & 1 = 0100 [4]
So when it is a odd number it get decremented by 1 and we have to print it odd and for even number it get incremented by 1 and we have to print it even.
 
You can see the above code execution and output in codeblocks IDE:
c++ program to find the number is even or odd
 
   

CPP Programs

Would you like to see your article here on tutorialsinhand. Join Write4Us program by tutorialsinhand.com

About the Author
Sayantan Bose
- šŸ”­ I’m currently working on DS Algo skills - 🌱 I’m currently learning web develeopement - šŸ‘Æ I’m looking to collaborate with Oppia - šŸ“« Reach me at https://www.linkedin.com/in/sayantan-bose-14134a1a6/ - šŸ˜„ Pronouns: his/him
Page Views :    Published Date : Sep 13,2020  
Please Share this page

Related Articles

Like every other website we use cookies. By using our site you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Learn more Got it!