#include<stdio.h>
int main()
{
int date = 0;
int year = 2008;
int month = 8;
int day = 8;
switch(month)
{
case 12:date +=30;
case 11:date +=31;
case 10:date +=30;
case 9:date +=31;
case 8:date +=30;
case 7:date +=31;
case 6:date +=30;
case 5:date +=31;
case 4:date +=30;
case 3:
if((year%4==0&&year%100!=0)||year%400==0)
{
date +=29;
}
else
{
date +=28;
}
case 2:
date +=31;
case 1:
date +=day;
printf("%d年%d月%d日是该年的第%d天"，year,month,day,date);
break;
degualt:
printf("error");
break;
}
return 0;
就从这个上面的来说，printf里的第一个逗号是中文的，其次default 拼写错了