Leap year

#include <stdio.h>
int main()
{
    int year;
    printf("Enter a year: ");
    scanf("%d",&year);
    if(year%4==0 && year%100!=0)
     {
       printf("%d is a leap year\n",year);
     }
     else if(year%400==0)
     {
       printf("%d is a leap year\n",year);
     }

    else
      printf("%d is not a leap year\n",year);
    return 0;
}