C#编程，枚举

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

namespace ConsoleApplication1
{
    enum Gender { Male, Female, Unknown };
    class Program
    {
        static void Main(string[] args)
        {
           //枚举类型  枚举的意义就在于限定变量的取值范围
            Gender g = Gender.Male;
            Console.WriteLine(g);

            Console.ReadKey();
        }
    }
}