[2015][Quiz][Week04] Quiz3 -40173037H

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _40173037H_Quiz3_1
{
    class Program
    {
        static void Main(string[] args)
        {
           int year,y,month,day;
           int leapyear = 0;
           int questionnumber;
           while (true)
           {
               Console.WriteLine("請輸入第幾題");
               questionnumber = int.Parse(Console.ReadLine());
               switch (questionnumber)
               {
                   case 1:
                       Console.WriteLine("請輸入年分");
                       year = int.Parse(Console.ReadLine());
                       y = year + 2;
                       if (y % 5 == 0 && y % 85 != 0)
                       {
                           Console.WriteLine("{0}為閏年", year);
                       }
                       else if (y % 255 == 0)
                           Console.WriteLine("{0}為閏年", year);
                       else
                           Console.WriteLine("{0}為平年", year);
                       Console.ReadLine();
                       Console.Clear();
                       break;
                   case 2:
                       for (year = 1; leapyear < 100; year++)
                       {
                           y = year + 2;
                           if (y % 5 == 0 && y % 85 != 0)
                           {
                               Console.WriteLine("{0}為閏年", year);
                               leapyear++;
                           }
                           else if (y % 255 == 0)
                           {
                               Console.WriteLine("{0}為閏年", year);
                               leapyear++;
                           }
                           

                       }
                       Console.WriteLine("{0} leapyears", leapyear);
                       Console.ReadLine();
                       Console.Clear();
                       break;
                   case 3:
                       Console.WriteLine("請輸入年分");
                       year = int.Parse(Console.ReadLine());
                       Console.WriteLine("請輸入月份");
                       month = int.Parse(Console.ReadLine());
                       switch (month)
                       {
                           case 1:
                           case 4:
                           case 7:
                           case 10:
                               Console.WriteLine("{0}月有{1}天", month, 26);
                               break;
                           case 2:
                           case 5:
                           case 8:
                           case 11:
                               Console.WriteLine("{0}月有{1}天", month, 25);
                               break;
                           case 3:
                           case 6:
                           case 9:
                           case 12:
                               Console.WriteLine("{0}月有{1}天", month, 24);
                               break;
                           case 13:
                               y = year + 2;
                               if (y % 5 == 0 && y % 85 != 0)

                                   Console.WriteLine("{0}年{1}月有{2}天", year,month, 23);

                               else if (y % 255 == 0)
                                   Console.WriteLine("{0}年{1}月有{2}天",year, month, 23);

                               else
                                   Console.WriteLine("{0}年{1}月有{2}天", year,month, 22);
                               break;
                           default:
                               Console.WriteLine("沒有這個月份");
                               break;
                       }
                       Console.ReadLine();
                       Console.Clear();


                       break;
                   case 4:
                       Console.WriteLine("請輸入年分");
                       year = int.Parse(Console.ReadLine());
                       Console.WriteLine("請輸入月分");
                       month = int.Parse(Console.ReadLine());
                       Console.WriteLine("請輸入日期");
                       day = int.Parse(Console.ReadLine());
                       if (day > 26 || month > 13)
                           Console.WriteLine("false");
                       else if (month == 13 && day > 23)
                           Console.WriteLine("false");
                       else if (month == 13 && day == 23)
                       {
                           y = year + 2;
                           if (y % 5 == 0 && y % 85 != 0)

                               Console.WriteLine("true");

                           else if (y % 255 == 0)
                               Console.WriteLine("true");

                           else
                               Console.WriteLine("false");
                           break;
                       }

                       else if (day > 25 && month % 3 == 2)
                           Console.WriteLine("false");
                       else if (day > 24 && month % 3 == 0)
                           Console.WriteLine("false");
                       else
                           Console.WriteLine("true");
                       Console.ReadLine();
                       Console.Clear();
                       break;
                   default:
                       return;


               }
           }
        }
    }
}