#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,?days;??????????
????if(year?%?4?==?0?&&?year?%?100?!=?0?||?year?%?400?==?0){????
????????i?=?1;?
????}else????
????????i?=?0;?????
????
????switch(month){
????????case?12:days?+=?30;????????
????????case?11:days?+=?31;????????
????????case?10:days?+=?30;????????
????????case?9:days?+=?31;????????
????????case?8:days?+=?31;????????
????????case?7:days?+=?30;????????
????????case?6:days?+=?31;????????
????????case?5:days?+=?30;????????
????????case?4:days?+=?31;????????
????????case?3:days?+=?28?+?i;????????
????????case?2:days?+=?30;????????
????????case?1:days?+=?day;break;????????
????????default:printf("dates?error!\n");????
????}????
????printf("%d年%d月%d日是該年的第%d天。\n",?year,?month,?day,?days);	
????
????return?0;
}