求助 某年某月某日,判断这一天是这一年的第几天?
题目:输入某年某月某日,判断这一天是这一年的第几天?为什么运行后输出的都是乱七八糟的数字 还带个负号,是编译器的问题吗? 求解答
#include <stdio.h>void main()
{
int day,month,year,sum,leap;
printf("please 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("error");
}
sum=sum+day;
if(year%400==0||(year%100==0&&year%100!=0))
leap=1;
else
leap=0;
if(leap==1&&month>2)
sum++;
printf("the sum is %d",sum);
}
[ 本帖最后由 witjay 于 2011-3-10 22:12 编辑 ]