#include?<stdio.h>

int?main()?

{?

????/*?定義需要計(jì)算的日期?*/

????int?year?=?2008;

????int?month?=?8;

????int?day?=?8;
????
????int?sum,flag;

????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;
????case?10:sum=273;break;
????case?11:sum=304;break;
????case?12:sum=334;break;
????default("錯(cuò)誤");break;
}?
????sum=sum+day;
????if(year%400==0||(year%4==0?&&?year%100!=0))
????????flag=1;
????else
????????flag=0;
????????if(flag==1&&month>2)
????????sum++;
???????printf("%d年%d月%d日是該年的第%d天"，year,month,day,sum);
????return?0;

}