题解 | #获得月份天数#

#include <stdio.h>

int main() {
    int year,mouth;
    
    while(scanf("%d %d",&year,&mouth)!=EOF)
    {
        int flag=0;//默认都不是闰年
        if(year%400==0||year%4==0&&year%100!=0)
        flag=1;
        if(flag==1)
        {
            
            int arr[13]={0,31,29,31,30,31,30,31,31,30,31,30,31};
            printf("%d\n",arr[mouth]);
        }
        else {
            int arr[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
            printf("%d\n",arr[mouth]);
        }


    }

    return 0;
}