using System;

public class Program

{

    public static void Main()

    {

        WeekDay day = WeekDay.TUE;

        switch (day)

        {

            case WeekDay.SUN:

                Console.WriteLine("星期日為一週的第{0}天!!",(int)WeekDay.SUN);

                break;

            case WeekDay.TUE:

                Console.WriteLine("星期二為一週的第{0}天!!",(int)WeekDay.TUE);

                break;

            default:

                Console.WriteLine("一週的第{0}天!!",(int)day);

                break;

​

        }

    }

    enum WeekDay

        {

            SUN = 1,

            MON = 2,

            TUE = 3,

            WED = 4,

            THU = 5,

            FRI = 6,

            SAT = 7

        }

}