On August 16, 2024
By Karmehavannan
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Categories: Check value, function in C, If block
Tags: C examples, C language, User defined function

C program for check whether given year is leap using function

In this article, we will discuss the concept of C program for check whether given year is leap using function

In this post, we are going to learn how to write a program to check the given year is leap or not, using function in C programming language

Check whether given year is leap using function

What is leap year

A normal year contains 365 days but a leap year contains 366 days

leap year is occurring once every four years, which has 366 days including 29 February as an intercalary day. it is called leap year

Century year

The century year is ending with 00

Ex 2000, 2100, 2200

a century year may be a leap year but it is not compulsory

How to find the leap year

if The given year is perfectly divisible by 4 , it is a leap year(except century year)

only if it is perfectly divisible by 400, the century year is a leap year,
a century year should be divisible by 4 and 100 both
a non century year should be divisible only by 4

Code to check leap year using function

Here, The program allows the user to enter the year and then it will check the year is a leap year or not, using function in C language

Program 1

#include <stdio.h>
#include <stdlib.h>
int leapYear(int);//function prototype
int main()
{
    int year;//variable declaration
    printf("Enter the year for check leap\n");
    //Ask input from the user
    scanf("%d",&year);
    //store the value in the year variable
    if(leapYear(year))//function definition
        printf("%d is a leap year",year);
    else
        printf("%d is not a leap year",year);
        getch();
    return 0;
}

int leapYear(int y)//function definition
{
    if((y%400==0)||((y%4==0)&&(y%100!=0)))
        //Leap year if perfectly divisible by 400
        //Leap year if perfectly divisible by 4
        //but if not divisible by 100
       return 1;
    else//all other years are not leap year
        return 0;
}

When the above code is executed, it produces the following result

Case 1

Enter the year for check leap
2028
2028 is a leap year

Case 2

Enter the year for check leap
2030
2030 is not a leap year

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C program for check whether given year is leap using function

C program for check whether given year is leap using function