题解 | #获得月份天数#

#include <stdio.h>

int Is_leep_year(int year)
{
	if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
	{
		return 1;
	}
	return 0;
}

int main()
{
	int year = 0;
	int month = 0;
	while (scanf("%d %d", &year, &month) != EOF)
	{
		int arr[] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 };

		if (Is_leep_year(year) && month == 2)
		{
			printf("%d\n", arr[month] + 1);
		}
		else
		{
			printf("%d\n", arr[month]);
		}
	}
	return 0;
}