题目1186：打印日期-----------------------请注意策略和输出方式printf("%04d-%02d-%02d\n",y,m,d);--------

AC:让n减去每个月的天数来计数

#include<stdio.h>

int main()
{            
    int a[12]={31,28,31,30,31,30,31,31,30,31,30,31},
        b[12]={31,29,31,30,31,30,31,31,30,31,30,31},
        y,n;
    while(scanf("%d %d",&y,&n)!=EOF)
    {
        int leap=0,m=0,d=0;
        if ((y%4==0 && y%100!=0)||(y%400==0)) leap=1;
        if (leap==0)
        {
            int i=0;
            while(n>0)////////////////////////////////n>0还是n>-1我犹豫了半天
            {
                n-=a[i++];
                m++;
            }
            d=n+a[i-1];
        }
        else
        {
            int j=0;
            while(n>0)
            {
                n-=b[j++];
                m++;
            }
            d=n+b[j-1];
        } 
    printf("%04d-%02d-%02d\n",y,m,d);
    }
    return 0;
}