# include <stdio.h>

//
//  Program 6.5, Stephen Kochan, Programming in C.
//

int main ( void )
{
  int year, rem_4, rem_100, rem_400;

  printf ( "Enter the year to be tested.\n" );
  scanf ( "%i", &year );

  rem_4 = year % 4;
  rem_100 = year % 100;
  rem_400 = year % 400;

  if ( ( rem_4 == 0 && rem_100 != 0 ) || rem_400 == 0 )
  {
    printf ( "%i is a leap year.\n", year );
  }
  else
  {
    printf ( "%i is NOT a leap year.\n", year );
  }

  return 0;
}