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/*
 *  Q3.c
 *  
 *
 *  Created by Daniel Gerald.
 *  Copyright 2006. All rights reserved.
 *
 */


#include <stdio.h>

int main(void)
{
   int value = 1, leap_year = 0;

    /* keep looping forever */
    while (value > 0)
    {
        printf ("Enter a year: ");
        /* year is a float value */
        scanf("%d", &value);
        fflush(stdin);
	

        /* calculate if year is not a leap year if it is not evenly divisable by 4 */
        if (value % 4 != 0)
        {
            leap_year = 0;
        }
      
        else if (value % 100 != 0)
		{
            leap_year = 0;
        }
 
        else if (value % 400 == 0)
        {
            leap_year = 1;

		
        }

        if (value > 0)
		{
		if (leap_year == 1)
		
		printf("Year %d is a leap year!", value);
		
		else 
		
		printf("Year %d is not a leap year!", value);
    }
}