#include?<stdio.h>
int?main()?
{?
????/*?定義需要計算的日期?*/
????int?year?=?2008;
????int?month?=?8;
????int?day?=?8;
????/*
?????*?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~
?????*/
????int?i,j;
????if((year%100==0&&year%400==0)||(year%100!=0&&year%4==0))
????{
????????i=1;
????}
????else
????{
????????i=0
????}
????switch(mouth)
????????case?1:j=day;break;
????????case?2:j=day+31;break;
????????case?3:j=day+31+28;break;
????????case?4:j=day+31+28+31;break;
????????case?5:j=day+31+28+31+30;break;
????????case?6:j=day+31+28+31+30+31;break;
????????case?7:j=day+31+28+31+30+31+30;break;
????????case?8:j=day+31+28+31+30+31+30+31;break;
????????case?9:j=day+31+28+31+30+31+30+31+31;break;
????????case?10:j=day+31+28+31+30+31+30+31+31+30;break;
????????case?11:j=day+31+28+31+30+31+30+31+31+30+31;break;
????????case?12:j=day+31+28+31+30+31+30+31+31+30+31+30;break;
????????default:printf("一年只有12個月");
????if(mouth>3)
????{
????????j+=i;
????}
????else
????{
????????j=j;
????}
????printf("%d年%月%日是該年的第%d天"，year,mouth,day,j);
	return?0;
}