[2015][Homework]Team02- Hw03

類別程式碼

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

namespace HW2
{
    class MyDateTime
    {
        //field
        public int Year;
        public int Month;
        public int Day;
        //Method
        public bool IsLeap()
        {
            if (Year % 4 == 0 && Year % 100 != 0)
                return true;
            else if (Year % 400 == 0)
                return true;
            else
                return false;
        }
        public void Print()
        {
            Console.WriteLine("{0}/{1}/{2}", Year, Month, Day);
        }
        public int DaysOfYear()
        {
            if(IsLeap () == true)
                return 366;
            else
                return 365;
        }
        public int DaysOfMonth()
        {
            if (Month == 2)
            {
                if (IsLeap() == true)
                {
                    return 29;
                }
                else
                    return 28;
            }
            else if (Month % 2 == 0 && Month >= 8)
                return 31;
            else if (Month % 2 == 1 && Month <= 7)
                return 31;
            else
                return 30;
        }
        public bool isLegal()
        {
            if (Day > 31 || Month > 12)
                return false;
            else if (Day == 31 && Month % 2 == 0)
            {
                if ((Month == 8) || (Month == 10) || (Month == 12))
                    return false;
                else
                    return false;
            }
            else if (Day == 31 && Month % 2 == 1)
            {
                if ((Month == 9) || (Month == 11))
                    return false;
                else
                    return true;
            }
            else if (Day >= 30 && Month == 2)
                 return false;
            else if (Day == 29 && Month == 2)
            {
                if (Year % 4 == 0)
                {
                    if (Year % 100 == 0 && Year % 400 != 0)
                        return false;
                    else
                        return true;
                }
                else
                    return false;
            }
            else
                return true;
                        
        }
        public string WeekDay()
        {
            if (Month == 1 || this.Month == 2)
            {
                Month += 12;
                Year--;
            }
            int week = (Day + 2 * Month + 3 * (Month + 1) / 5 + Year + Year / 4 - Year / 100 + Year / 400 + 1) % 7;
            switch (week)
            {
                case 1:
                   return "Monday";
                case 2:
                    return "Tuesday";
                 case 3:
                    return "Wednesday";
                case 4:
                    return "Thursday";
                case 5:
                    return "Friday";
                case 6:
                    return "Saturday";
                case 0:
                    return "Sunday";
                default:
                    return "false";
            }
        }
    }
}

主程式碼

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

namespace HW2
{
    class Program
    {
        static void Main(string[] args)
        {
            MyDateTime date = new MyDateTime();
            while (true)
            {
                Console.WriteLine("Input Year");
                date.Year = int.Parse(Console.ReadLine());
                Console.WriteLine("Input Month");
                date.Month = int.Parse(Console.ReadLine());
                Console.WriteLine("Input Day");
                date.Day = int.Parse(Console.ReadLine());
                if (date.isLegal() == false)
                {
                    Console.WriteLine("{0},{1},{2} is not a legal date!", date.Year, date.Month, date.Day);
                    Console.WriteLine("Input Again!");
                    Console.ReadLine();
                    Console.Clear();
                    continue;
                }
                Console.WriteLine("************************************************************");
                switch (date.IsLeap())
                {
                    case true:
                        Console.WriteLine("Year {0} is a leap year!", date.Year);
                        break;
                    case false:
                        Console.WriteLine("Year {0} is not a leap year!", date.Year);
                        break;
                }
                Console.WriteLine("Days of year {0} = {1}", date.Year, date.DaysOfYear());
                Console.WriteLine("Days of {0}/{1} = {2}", date.Year, date.Month, date.DaysOfMonth());
                Console.WriteLine("{0}/{1}/{2} is {3}", date.Year, date.Month, date.Day, date.WeekDay());
                Console.WriteLine("************************************************************");
                Console.WriteLine("Again? Y/N");
                char select = Convert.ToChar(Console.ReadLine());
                if (select != ('y') && select != ('Y'))
                {
                    break;
                }
                Console.Clear();
            }
            Console.WriteLine("Program end!");
            Console.ReadLine();
        }
    }
}