求大Lao告知这个怎么做，我是刚学不久

Question

求大Lao告知这个怎么做，我是刚学不久，这个怎么做啊……，请帮我解答谢了

Answer 1

供参考：

#include<stdio.h>
int isLeap(int y)
{
    return ((y%4==0 && y%100!=0)||(y%400==0));
}
int GetDaysOfMonth(int y, int m)
{
    int daysOfMonth[12] = {31,28,31,30,31,30,31,31,30,31,30,31};
    if(isLeap(y) && m == 2)  return daysOfMonth[m-1]+1;
    return daysOfMonth[m-1];
}
int main()
{
    int year ,month ,day, ret;
    //printf("请输入年月日:");
    ret = scanf("%d %d %d", &year, &month, &day);
    if (ret == 3){
        if (year > 0 && month > 0 && month < 13 &&
            day <= GetDaysOfMonth(year,month) && day >= 1)
            printf("YES");
        else
            printf("NO");
    }
    else
        printf("Input error.");
    return 0;
}