求指点哪里有错误!
#include <stdio.h>
int main()
{
/* 定义需要计算的日期 */
int year = 2008;
int month = 8;
int day = 8;
switch(month-1)
{
case 12:day+=31;
case 11:day+=30;
case 10:day+=31;
case 9:day+=30;
case 8:day+=31;
case 7:day+=31;
case 6:day+=30;
case 5:day+=31;
case 4:day+=30;
case 3:day+=31;
case 2:
if((year%4==0 && year%100==0) || (year%400==0))
day+=29;
else
day+=28;
case 1:day+=31;
}
printf("2008年8月8日这一天是该年第%d天",day);
return 0;
}