View Code of Problem 28

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int year;
    while(scanf("%d",&year) != EOF){
        if(year % 400 ==0 ||(year %100 != 0 && year %4 ==0)){
            printf("Leap Year\n");
        }
        else{
            printf("Not Leap Year\n");
        }
    }
    return 0;
}