从键盘输入年份,判断是否是闰年。
#include <stdio.h>
int main(void)
int year,yes;
scanf("%d" ,&year);
if (year%=4= =0&&year%100!=0) yes=1;
else if(____) yes=1; /*第一空/
else________; /*第二空*/
if______ ) print("%d is ",year); . /*第三空*/
else printf("%d is not ",year);
printf("a leap year.\n");
return 0;