5_5.c

c_tan:谭浩强编著c语言程序设计一书的c程序源文件

# include <stdio.h>
main()
{

	int year,leap;
	printf("请输入一个年份,输入0结束");
	scanf("%d",&year);
	do {
		if ((year%4==0 && year%100!=0) || (year%400==0)) leap = 1;
		else leap = 0;
		if(leap == 1) printf("这个是闰年\n");
		else
		printf("不是一个闰年!\n");
		scanf("%d",&year);
	} while (year!=0);


}