hdu2005第几天？

 1 #include<stdio.h>
 2 int main(){
 3      int year,mouth,day;
 4      while(scanf("%d/%d/%d",&year,&mouth,&day)!=EOF){
 5          int i=0;
 6          switch(mouth-1){
 7              case 11:i+=30;
 8             case 10:i+=31;
 9             case 9:i+=30;
10             case 8:i+=31;
11             case 7:i+=31;
12             case 6:i+=30;
13             case 5:i+=31;
14             case 4:i+=30;
15             case 3:i+=31;
16             case 2:if(year%400==0||(year%4==0&&year%100!=0))
17                     i+=29;else
18                             i+=28;
19             case 1:i+=31;    
20          }
21          printf("%d\n",i+day);
22      }
23     return 0;
24  }