题解 | 获得月份天数

#include <stdio.h>


int isLeapYear(int y)
{
    if ((y % 4 == 0 && y % 100 != 0)||(y % 400 == 0)) {
        return 1;
    }
    return 0;
}
int main() 
{
    int year, month, day;
    int months[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
    while (scanf("%d %d", &year, &month) != EOF)
    { 
        if (month == 2 && isLeapYear(year)) 
        {
            printf("29\n");
            continue;
        }
        printf("%d\n",months[month]);
    }
    return 0;
}