[2015][Quiz][Week04] Quiz3 - 40173022H

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

namespace ConsoleApplication4
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("1.輸入一個星球紀元年分，將會判斷其為閏年或平年");
            Console.WriteLine("2.列出星球紀元前100個閏年的年份");
            Console.WriteLine("3.輸入一個年份及月份，印出該月的天數");
            Console.WriteLine("4.輸入年、月、日，判斷該日是否合法");
            Console.WriteLine("請輸入1~4進行選擇");
            int select;
            select = int.Parse(Console.ReadLine());
            int y, year, month, day;
            
            switch(select)
            {
                case 1:
                    {
                        Console.WriteLine("請輸入一星球紀元年份");
                        y=int.Parse(Console.ReadLine());
                        year = y +2 ;

                        if(year%255==0)
                            Console.WriteLine("星球紀元{0}年為閏年",y);
                        else if(year%5==0&&year%85!=0)
                            Console.WriteLine("星球紀元{0}年為閏年",y);
                        else
                            Console.WriteLine("星球紀元{0}年為平年",y);
                        
                        Console.Read();
                    }
                    break;
                case 2:
                    {
                        int a=0;
                        for(int i=3;a<100;i+=5)
                        {
                            year=i+2;
                            if (year % 255 == 0)
                            {
                                Console.WriteLine("{0}", i);
                                a++;
                            }
                            else if (year % 5 == 0 && year % 85 != 0)
                            {
                                Console.WriteLine("{0}", i);
                                a++;
                            }
                                                        
                        }
                        Console.WriteLine("以上為星球紀元前{0}個閏年", a);
                        Console.Read();
                    }
                    break;
                case 3:
                    {
                        Console.WriteLine("請輸入一星球紀元年份");
                        y = int.Parse(Console.ReadLine());

                        Console.WriteLine("請輸入一星球紀元月份(1~13)");
                        month = int.Parse(Console.ReadLine());

                        switch(month)
                        {
                            case 1:
                            case 4:
                            case 7:
                            case 10:
                                Console.WriteLine("星球紀元{0}年{1}月為大月,有26天", y, month);
                                break;
                            case 2:
                            case 5:
                            case 8:
                            case 11:
                                Console.WriteLine("星球紀元{0}年{1}月為中月,有25天", y, month);
                                break;
                            case 3:
                            case 6:
                            case 9:
                            case 12:
                                Console.WriteLine("星球紀元{0}年{1}月為小月,有24天", y, month);
                                break;
                            case 13:
                                {
                                    year=y+2;
                                    if (year % 255 == 0)
                                        Console.WriteLine("星球紀元{0}年為閏年,{1}月有23天", y, month);
                                    else if (year % 5 == 0 && year % 85 != 0)
                                        Console.WriteLine("星球紀元{0}年為閏年,{1}月有23天", y, month);
                                    else
                                        Console.WriteLine("星球紀元{0}年為閏年,{1}月有22天", y, month);
                                }
                                break;
                            default:
                                Console.WriteLine("輸入錯誤!!");
                                break;
                        }
                        Console.Read();
                    }
                    break;
                case 4:
                    {
                        Console.WriteLine("請輸入一星球紀元年份");
                        y = int.Parse(Console.ReadLine());

                        Console.WriteLine("請輸入一星球紀元月份(1~13)");
                        month = int.Parse(Console.ReadLine());

                        Console.WriteLine("請輸入一星球紀元日期");
                        day = int.Parse(Console.ReadLine());

                        if (month == 1 || month == 4 || month == 7 || month == 10 && day <= 26)
                            Console.WriteLine("true");
                        else if (month == 2 || month == 5 || month == 8 || month == 11 && day <= 25)
                            Console.WriteLine("true");
                        else if (month == 3 || month == 6 || month == 9 || month == 12 && day <= 24)
                            Console.WriteLine("true");
                        else if (month == 13)
                        {
                            year = y+2;
                            if (year % 255 == 0 && day <= 23)
                                Console.WriteLine("true");
                            else if (year % 5 == 0 && year % 85 != 0 && day <= 23)
                                Console.WriteLine("true");
                            else if (day <= 22)
                                Console.WriteLine("true");
                            else
                                Console.WriteLine("false");
                        }
                        else
                            Console.WriteLine("false");
                        
                        Console.Read();
                    }
                    break;
                default:
                    Console.WriteLine("請輸入1~4");
                    Console.Read();
                    break;

                    Console.Read();
            }

        }
    }
}