题解 | #获得月份天数#

#include<stdio.h>
int main()
{
    int year = 0;
    int mounth = 0;
    while (scanf("%d %d", &year, &mounth) != EOF)
    {
        if (mounth == 1 || mounth == 3 || mounth == 5 || mounth == 7 || mounth == 8 || mounth == 10 || mounth == 12)
        {
            printf("31\n");
        }
        else if (mounth == 4 || mounth == 6 || mounth == 9 || mounth == 11)
        {
            printf("30\n");
        }
        else if ((mounth == 2)&&(year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
        {
            printf("29\n");
        }
        else
        {
            printf("28\n");
        }

    }
    
    return 0;
}