Question

这个C语言程序illegal else without matching if是怎么回事？

这个是计算是不是闰年的
求大神解释错在哪了 小弟刚开始学
#include <stdio.h>
int main()
{
int year,leap;
scanf("%d",&year);
if(year%4==0&&year%100!=0) leap=1;
if(year%400==0) leap=1;
else leap=0;
else leap=0;
if(leap) printf("%d is",year);
else printf("%d isn't",year);
printf(" a leap year.\n");
return 0;
}

Answer 1

if(year%4==0&&year%100!=0)
{
leap=1;
if(year%400==0) leap=1;
else leap=0;
}
else leap=0;

改这样试试，你那样if和最后的else不是匹配关系

Answer 2

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