#include <stdio.h>
int main()
{
??? /* 定義需要計算的日期 */
??? 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:printf("一年當中只有12個月哦"，);
??????? break;
??? }???
??? sum=sum+day;
??? if(year%4==0&&year%100!=0||year%400==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;
}