不知道哪里錯(cuò)了呀？

#include <stdio.h>
int main()
{
??? /* 定義需要計(jì)算的日期 */
??? int year=2008;
??? int month=8;
??? int day=8;
??? /*
???? * 請(qǐng)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(diǎn)擊左側(cè)任務(wù)中的“不會(huì)了怎么辦”
???? * 小編還是希望大家獨(dú)立完成哦~
???? */
??? int sum,flag;
??? switch(month)
??? {
??????? case 1:sum=0+day;break;
??????? case 2:sum=31+day;break;
??????? case 3:sum=59+day;break;
??????? case 4:sum=90+day;break;
??????? case 5:sum=120+day;break;
??????? case 6:sum=151+day;break;
??????? case 7:sum=181+day;break;
??????? case 8:sum=212+day;break;
??????? case 9:sum=243+day;break;
??????? case 10:sum=273+day;break;
??????? case 11:sum=304+day;break;
??????? case 12:sum=384+day;break;
??????? default:printf("一年只有12個(gè)月哦！");break;
??? }
??? if(year%400==0||(year%4==0&&year%100!=0))
?????????? flag=1;
??? else
?????????? flag=0;
??? if(flag==1&&month>2)
?????????? sum++;
?????? printf("%年%月%日是這一年的第%天\n",year,month,day,sum);
??? return 0;
}

慕粉1473175450

2016-10-08

源自：C語言入門 4-17

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JustWannaHugU 回答被采納 +3 積分
2016-10-09

同學(xué)，你的printf輸出語句有問題，下面是改正后的代碼

#include?<stdio.h>
int?main()?
{?
????/*?定義需要計(jì)算的日期?*/
????int?year=2008;
????int?month=8;
????int?day=8;
????/*
?????*?請(qǐng)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(diǎn)擊左側(cè)任務(wù)中的“不會(huì)了怎么辦”
?????*?小編還是希望大家獨(dú)立完成哦~
?????*/
????int?sum,flag;
????switch(month)
????{
????????case?1:sum=0+day;break;
????????case?2:sum=31+day;break;
????????case?3:sum=59+day;break;
????????case?4:sum=90+day;break;
????????case?5:sum=120+day;break;
????????case?6:sum=151+day;break;
????????case?7:sum=181+day;break;
????????case?8:sum=212+day;break;
????????case?9:sum=243+day;break;
????????case?10:sum=273+day;break;
????????case?11:sum=304+day;break;
????????case?12:sum=384+day;break;
????????default:printf("一年只有12個(gè)月哦！");break;
????}
????if(year%400==0||(year%4==0&&year%100!=0))
???????????flag=1;
????else
???????????flag=0;
????if(flag==1&&month>2)?
???????????sum++;//Error1：未加%d
???????printf("%d年%d月%d日是該年的第%d天\n",year,month,day,sum);//Error2：這一年改為該年
????return?0;
}

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