c program to check leap year

DESCRIPTION:
c program to check leap year: c code to check leap year,
year will be entered by the user. Please read the leap year
article before reading the code, it will help you to understand the program.
C programming code
#include <stdio.h>

int 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;
}
OUTPUT
ENTER A YEAR TO CHECK IF IT IS A LEAP YEAR:
2012
2012 IS A LEAP YEAR