C程序設計 例題 判讀某一年是否爲閏年（2）

#include<stdio.h>
int main()
{
	int year,leap;
	printf("enter year:");
	scanf("%d",&year);
	if(year%4!=0)
		leap=0;
	else if(year%100!=0)
		leap=1;
	else if(year%400!=0)
		leap=0;
	else
		leap=1;
	if(leap)
		printf("%d is",year);
	else
		printf("%d is not",year);
	printf(" a leap year.\n");
	return 0;
}