using System;
namespace HelloWorldApplication
{
class HelloWorld
{
static void Main(string[] args)
{
Console.WriteLine("请输入年份");
int year = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("请输入月份");
int month = Convert.ToInt32(Console.ReadLine());
switch(month){
case 1: Console.WriteLine("该月有30天");
break;
case 2: if((year/4 == 0 && year/100 != 0) || (year/400 == 0))
{
Console.WriteLine("该月有29天");
}else
{
Console.WriteLine("该月有28天");
}
break;
default: Console.WriteLine("该月有30天");
break;
Console.ReadKey();
}
}
}