做题记录--day40

《算法笔记》3.4小节——入门模拟->日期处理

D无难度，注意格式是yyyy-mm-dd,年也是要补足的，样例里面没有提醒但是自己要注意啊！！

#include<stdio.h>
int month[13][2]={0,0,31,31,28,29,31,31,30,30,31,31,30,30,31,31,31,31,30,30,31,31,30,30,31,31};
bool isrun(int year)
{
    if((year%4==0 && year%100!=0) || year%400==0)
        return true;
    return false;
}
int main()
{
    int y,n;
    while(scanf("%d %d",&y,&n)!=EOF)
    {
        int i=1;
        while(n-month[i][isrun(y)]>0)
        {
            n=n-month[i][isrun(y)];
            i++;
            if(i==13)
            {
                i=1;
                y++;
            }
        }
        printf("%04d-%02d-%02d\n",y,i,n);
    }
    return 0;
}

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