【C】#获得月份天数#

#include <stdio.h>

int main() {
    int year = 0;
    int month = 0;
    int day[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    while (scanf("%d %d", &year, &month) != EOF) {
        if (month == 2) {
            if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
                printf("%d\n", day[1] + 1);
            } else {
                printf("%d\n", day[1]);
            }
        } else {
            printf("%d\n", day[month - 1]);
        }
    }
    return 0;
}