C program to check whether given year is leap year or not.

#include<stdio.h>

#include<conio.h>

void main() {

int year;

clrscr();

printf("Enter a year\n");

scanf("%d",&year);

if (year%400==0) 

printf("%d is a leap year\n",year);

else {

if (year%100==0) 

printf("%d is not a leap year\n",year);

else {

if(year%4==0) 

printf("%d is a leap year",year);

else 

printf("%d is not a leap year\n",year);

}

}

getch();

}