题目：输入某年某月某日，判断这一天是这一年的第几天？
本帖最后由 xiaoxiaohu 于 2015-12-27 23:25 编辑#include<stdio.h>
void main()
{
int day,month,year,sum,leap;
printf("\nplease input year,month,day\n");
scanf("%d,%d,%d",&year,&month,&day);
switch(month)
{
case 1:sum=0;break;
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("data error");break;
}
sum=sum+day;
if(year%400==0||(year%4&&year%100!=0))
leap=1;
else
leap=0;
if(leap==1&&month>2)
sum++;
printf("It is the %dth day.\n",sum);
}
求助这段代码的if(year%400==0||(year%4&&year%100!=0))这句判断是不是闰年有问题不？ 没错，是这样的
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