求指点 到底哪错了
#include <stdio.h>
int main()
{
int year = 2008;
int month = 8;
int day = 8;
int sum,F;
switch(month)
{
case 1:sum=0;break;
case 2:sum=31;break;
case 3:sum=59;break;
case 4:sum=90;break;
case 5:sum=120;break;
case 6:sum=151;break;
case 7:sum=181;break;
case 8:sum=212;break;
case 9:sum=243;break;
}
sum+=day;
if(year%4==0)
F=1;
else
F=0;
if(month>2)
sum++;
printf("%d年%d月%d日是该年的第%d天",year,month,day,sum);
return 0;
}