#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 =0,flag=0;
??? /*
???? * 請使用switch語句，if...else語句完成本題
???? * 如有想看小編思路的，可以點擊左側任務中的“不會了怎么辦”
???? * 小編還是希望大家獨立完成哦~
???? */
??? switch(month)
??? {
??????? case 1:
??????????? sum=0;
??????? 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("一年只有12個月");
??????????? 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;
}