尝试做一个菜单循环

Question

我正在 visual studio 自学 C# 并尝试在我的代码中添加一个循环，这样它就像一个菜单，用户可以在其中 select 一个选项，但可以随时退出该选项无需停止并重新启动整个代码。我只是想不出把它放在哪里才能使它运行正确 - 其余代码像菜单一样工作，但只让你 select 一个选项和运行它之前的一次停止。

这是我目前所拥有的；

class 程序 { 私有静态字符串成员资格；

        static void Main(string[] args)
        {
            Console.Title = "Gym Menu";
            Console.WriteLine("Welcome,  What would you like to do?");
        Console.WriteLine("");
            Console.WriteLine("[1] BMI Calculator");
            Console.WriteLine("[2] Choose Membership");
        Console.WriteLine("[3] Exit");

            string input = Console.ReadLine();

            if (input == "1")
            {
            bmicalculator();
            }
            else if (input == "2")
            {
            choosemembership();
            }

            else if (input == "3")
            {
                Console.WriteLine("goodbye");
                Environment.Exit(0);
            }
        }

        public static void mainmenu()
        {
            Console.Clear();
            Console.ReadLine();
        }

        public static void bmicalculator()
        {
            Console.WriteLine("BMI Calculator");
            Console.WriteLine();
            Console.Write("Weight in kg: ");
            int kg; kg = Convert.ToInt32(Console.ReadLine());
            Console.Write("Height in cm: ");
            int m; m = Convert.ToInt32(Console.ReadLine());
            double BMI; BMI = kg / ((m / 100.0) * (m / 100.0));
            Console.WriteLine("your BMI is.." + BMI);
            if (BMI < 18.5) { Console.WriteLine("-> Underweight"); }
            if (BMI >= 18.5 & BMI <= 25) { Console.WriteLine("-> Normal"); }
            if (BMI >= 25 & BMI <= 30) { Console.WriteLine("-> Overweight"); }
            if (BMI >= 30) { Console.WriteLine("-> Obese"); }

        Console.WriteLine("Press any key to continue or enter return to go to the menu..");
        Console.ReadKey();
        Console.ReadLine();

        }
        public static void choosemembership()
        {
            Console.WriteLine("Please choose your membership from the options below");
            Console.WriteLine(" Basic pw - Regular pw -  Premium pw");
            membership = Console.ReadLine();
            switch (membership)
            {
                case "Basic":
                    {
                        Console.WriteLine("You have chosen the basic membership for  per week");
                        break;
                    }
                case "Regular":
                    {
                        Console.WriteLine("You have chosen the regular membership for  per week");
                        break;
                    }
                case "Premium":
                    {
                        Console.WriteLine("You have chosen the premium membership for  per week");
                        break;
                    }

                default:
                    {
                        Console.WriteLine("You have not selected a valid membership type");
                        break;
                    }
            }
            Console.WriteLine("Press any key to continue...");
            Console.ReadKey();

        }
    }

}

如果有人能提供帮助，我将不胜感激:)

Answer 1

立即在 main 函数内做一个 while 循环...

static void Main(string[] args)
{
    while (true)
    {
        .... existing code as is
    }
{

Answer 2

用这个，注意有一行代码我注释掉了

    static void Main(string[] args)
    {
        while (true)
        {
            Console.Title = "Gym Menu";
            Console.WriteLine("Welcome,  What would you like to do?");
            Console.WriteLine("");
            Console.WriteLine("[1] BMI Calculator");
            Console.WriteLine("[2] Choose Membership");
            Console.WriteLine("[3] Exit");

            string input = Console.ReadLine();

            if (input == "1")
            {
                bmicalculator();
            }
            else if (input == "2")
            {
                choosemembership();
            }

            else if (input == "3")
            {
                Console.WriteLine("goodbye");
                Environment.Exit(0);
            }
        };
        
    }

    public static void mainmenu()
    {
        Console.Clear();
        Console.ReadLine();
    }

    public static void bmicalculator()
    {
        Console.WriteLine("BMI Calculator");
        Console.WriteLine();
        Console.Write("Weight in kg: ");
        int kg; kg = Convert.ToInt32(Console.ReadLine());
        Console.Write("Height in cm: ");
        int m; m = Convert.ToInt32(Console.ReadLine());
        double BMI; BMI = kg / ((m / 100.0) * (m / 100.0));
        Console.WriteLine("your BMI is.." + BMI);
        if (BMI < 18.5) { Console.WriteLine("-> Underweight"); }
        if (BMI >= 18.5 & BMI <= 25) { Console.WriteLine("-> Normal"); }
        if (BMI >= 25 & BMI <= 30) { Console.WriteLine("-> Overweight"); }
        if (BMI >= 30) { Console.WriteLine("-> Obese"); }

        Console.WriteLine("Press any key to continue or enter return to go to the menu..");
        Console.ReadKey();
        // Console.ReadLine();

    }
    public static void choosemembership()
    {
        Console.WriteLine("Please choose your membership from the options below");
        Console.WriteLine(" Basic pw - Regular pw -  Premium pw");
        var membership = Console.ReadLine();
        switch (membership)
        {
            case "Basic":
                {
                    Console.WriteLine("You have chosen the basic membership for  per week");
                    break;
                }
            case "Regular":
                {
                    Console.WriteLine("You have chosen the regular membership for  per week");
                    break;
                }
            case "Premium":
                {
                    Console.WriteLine("You have chosen the premium membership for  per week");
                    break;
                }

            default:
                {
                    Console.WriteLine("You have not selected a valid membership type");
                    break;
                }
        }
        Console.WriteLine("Press any key to continue...");
        Console.ReadKey();
    }

尝试做一个菜单循环

trying to do a menu loop

c#

loops

menu