#include <stdio.h>
int main()
{
int year,month,day,sum;
char a;
loop: do{
printf("input year,month,day\n");
scanf("%d.%d.%d",&year,&month,&day);
if(month>=1&&month<=12&&day>=1&&day<=31)
{
switch(month)
{
case 1:sum=day;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
case 2:sum=day+31;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
case 3: if(year%400==0||(year%4==0&&year%100!=0))
{
sum=day+60;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
}
else
{
sum=day+59;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
}
case 4:sum=day+90;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
case 5:sum=day+120;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
case 6:sum=day+151;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
case 7:sum=day+181;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
case 8:sum=day+212;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
case 9:sum=day+243;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
case 10:sum=day+273;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
case 11:sum=day+304;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
case 12:sum=day+334;printf("%d年%d月%d日是该年的第%d天\n",year,month,day,sum);break;
default:printf("一年只有12个月哟~\n");break;
}
printf("Do you want to continue?y/n\n");
scanf(" %c",&a);
}
else
{
printf("Error\n");
goto loop;
}
}while(a=='y'||a=='Y');
return 0;
}
无论闰年非闰年每年的8月8号都显示是220天，其实闰年是221天，也就是判断不了闰年，求解
onemoo