【C#チュートリアル】C#列挙型(Enum)

enum <enum_name>
{ 
    enumeration list 
};

enum Days { Sun, Mon, tue, Wed, thu, Fri, Sat };

using System;
namespace EnumApplication
{
   class EnumProgram
   {
      enum Days { Sun, Mon, tue, Wed, thu, Fri, Sat };

      static void Main(string[] args)
      {
         int WeekdayStart = (int)Days.Mon;
         int WeekdayEnd = (int)Days.Fri;
         Console.WriteLine("Monday: {0}", WeekdayStart);
         Console.WriteLine("Friday: {0}", WeekdayEnd);
         Console.ReadKey();
      }
   }
}

Monday: 1
Friday: 5