题解 | #获得月份天数#

#include <stdio.h>

int main() {
    int year,month;
    int days[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
    //0为了使下标代表月份
    while(scanf("%d %d",&year,&month)!=EOF)
    {
        int day = days[month];
        if(month==2)
        {
            if(year%4==0 && year%100!=0 || year%400==0)
            {
                day++;//闰年二月多一天
            }
        }
        printf("%d\n",day);
    }
    return 0;
}