C#枚举

using System;using System.Collections.Generic;using System.Linq;using System.Text;/* * 1、枚举是值类型 * 2、成员只有一种类型：命名的整数值常量 * 3、成员声明列表以逗号隔开 * 4、后一个成员比前一个增1 * 5、不能有重复的名称，但可以有重复的值 */namespace exEnum{ enum TrafficLight { Green, Yellow, Red=99, Black=99, Pink } class Program { static void Main(string[] args) { TrafficLight t1 = TrafficLight.Yellow; TrafficLight t2 = TrafficLight.Red; TrafficLight t3 = TrafficLight.Pink; TrafficLight t4 = TrafficLight.Black; Console.WriteLine("{0},\t{1}",t1,(int)t1); Console.WriteLine("{0},\t{1}", t2, (int)t2); Console.WriteLine("{0},\t{1}", t3, (int)t3); Console.WriteLine("{0},\t{1}", t4, (int)t4); Console.ReadKey(); } }}