e _10常量枚举

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace _10常量枚举{internal class Program{#region [2] enum枚举的定义和使用//定义枚举public enum Gender {Male 1,Female0}#endregionstatic void Main(string[] args){Test1();Test2();Test3();Console.ReadLine();}//第9章 常量枚举//const常量、enum枚举、程序调试技巧#region [1] 常量的使用static void Test1(){const double PAI 3.14; // 声明常量命名规范通常用全大写double result PAI * (5 * 5); // 计算圆面积Console.WriteLine(圆面积 result);}#endregion#region [2] enum枚举的使用static void Test2(){//声明枚举变量Gender gender Gender.Male;Console.WriteLine(gender); //Maleint value (int)gender;Console.WriteLine(value); //1}static void Test3(){int ceshi 0;for (int i 0; i 10; i){ceshi;Console.WriteLine(你好i);}//定义一个星期枚举变量赋值为星期五DayOfWeek week DayOfWeek.Friday;switch (week){case DayOfWeek.Sunday:Console.WriteLine(今天是星期日);break;case DayOfWeek.Monday:Console.WriteLine(今天是星期一);break;case DayOfWeek.Tuesday:Console.WriteLine(今天是星期二);break;case DayOfWeek.Wednesday:Console.WriteLine(今天是星期三);break;case DayOfWeek.Thursday:Console.WriteLine(今天是星期四);break;case DayOfWeek.Friday:Console.WriteLine(今天是星期五);break;case DayOfWeek.Saturday:break;default:break;}}#endregion}}