_14__enum___Weekday得到某日的下一日(星期几)

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// 声明一个枚举类型Weekday，基类为int，访问范围为publicpublic enum Weekday{Sun, Mon, Tue, Wed, Thu, Fri, Sat}

判断方法

// 功能： 得到某日的下一日(星期几)// 参数：//        wd : 枚举类型Weekday// 返回值： 枚举类型Weekdaypublic static Weekday NextDay(Weekday wd){Weekday wdnext;if (wd == Weekday.Sat){wdnext=Weekday.Sun;}else{wdnext=wd+1;}return wdnext;}

主程序中：

 public static void Main(){// 用枚举类型Weekday声明变量并赋初值Weekday wd1 = Weekday.Mon;Console.WriteLine("每周的工作日从{0}开始",wd1);Weekday wd2=Weekday.Fri;Console.WriteLine("到{0}结束",wd2);// 枚举类型变量用于计算Console.WriteLine("每周有{0}个工作日", wd2-wd1);Console.WriteLine();// 枚举类型变量作为函数的参数Console.WriteLine("Mon之后是{0}",NextDay(Weekday.Mon));Console.WriteLine();// 使用枚举类型的GetNames()方法foreach(string s1 in Weekday.GetNames(typeof(Weekday))){Console.Write(s1+" ");}Console.WriteLine("\n");// 从命令行读取枚举类型变量的值Console.Write("今天是星期几? ");Weekday wd3=(Weekday)Weekday.Parse(typeof(Weekday),Console.ReadLine());Console.WriteLine("明天是{0}",NextDay(wd3));Console.WriteLine();// 比较枚举类型的值Console.Write("体育课在星期几? ");wd1=(Weekday)Weekday.Parse(typeof(Weekday),Console.ReadLine());Console.Write("物理试验在星期几? ");wd2=(Weekday)Weekday.Parse(typeof(Weekday),Console.ReadLine());if(wd1.CompareTo(wd2) == 0){Console.WriteLine("糟糕，在同一天。");}else{Console.WriteLine("没事，不在同一天");}}

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