C Program to find if the Given year is a Leap Year or Not

Posted by AbundantCode

Problem

Write a program in C to check whether a year entered by the user is a leap year or not.

How to find if the given Year is a Leap Year or Not in C ?

If the Year is divisible exactly by 4 , then it is a Leap Year. Additionally for the century years that ends with 00 , it is a Leap Year if it is divisible exactly by 400.

Here’s a program in C language to demonstrate this.

#include <stdio.h>
int main()
{
    printf("Abundantcode.com's Coding sample\n");
    int inputYear;
    printf("Enter a year: ");
    scanf("%d",&inputYear);

    if(inputYear %4 == 0)
    {
        if( inputYear % 100 == 0)
        {
            if ( inputYear % 400 == 0)
                printf("%d is leap year.", inputYear);
            else
                printf("%d is not a leap year.", inputYear);
        }
        else
            printf("%d is leap year.", inputYear );
    }
    else
        printf("%d is not a leap year.", inputYear);
    
    return 0;
}

Output

Abundantcode.com’s Coding sample                                      
Enter a year: 2004                                         
2004 is leap year.

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