2005 ACM 第几天 闰年

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);
    }
}