这是题目:
“如果月份错误,输出ERROR”这个没有实现,比如我输月份输13,error没有输出。不知道是语法错误还是我对这个“月份错误”的理解有误,请大佬帮忙看一看
#include <stdio.h>
int main()
{
int year,month;
scanf("%d %d",&year,&month);
if(0<year<=12)
{
if(year%4==0&&year%100!=0||year%400==0)
{
if(year=2)
printf("29");
}
else
{
switch(month)
{
case 1:
printf("31");
break;
case 2:
printf("28");
break;
case 3:
printf("31");
break;
case 4:
printf("30");
break;
case 5:
printf("31");
break;
case 6:
printf("30");
break;
case 7:
printf("31");
break;
case 8:
printf("31");
break;
case 9:
printf("30");
break;
case 10:
printf("31");
break;
case 11:
printf("30");
break;
case 12:
printf("31");
break;
}
}
}
else
printf("ERROR");
return 0;
}