Check Leap Year

/*
 Write a program in C to check input year is leap year or not
*/

#include<stdio.h>

main()
{
      int year;

      printf("Enter a year to check if it is a leap 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.\n", year);


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

      return 0;
}