题目：http://acm.hdu.edu.cn/showproblem.php?pid=2005
注意：闰年
查表法

#include<stdio.h>

int main()

{

    int i,n;

    int year,mouth,day;

    int a[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};

    while(scanf("%d/%d/%d",&year,&mouth,&day)!=EOF)

    {

          n=0;

          for(i=1;i<mouth;i++)

          n+=a[i];

          n+=day;

          if((year%4==0&&year%100!=0)||(year%400==0))

               if(mouth>2)

               n++;

         printf("%d\n",n);

    }

}