#include <stdio.h>
int isLeapYear (int year){   if (year % 4 == 0)   {   if (year % 100 == 0)    {     if (year % 400 == 0)     {      return  1;     }     return  0;    }    return  1;   }   else   {    return  0;   }}

int main(){    int year;    printf("Enter any year: ");    scanf("%d\n", &year);
    if(isLeapYear(year))     {         printf("%d is leap year!\n", year);     }    else     {         printf("%d is not leap year!\n", year);     }    return 0;}