当我完成转换汇率的任务时，我想 return 到启动程序时出现的主菜单

Question

我想return到主菜单而不是重新启动程序来更改转换类型..有什么帮助吗？如果有人帮助我，我将不胜感激..

using System;

namespace Assignment_1_Csharp
{
    internal class Program
    {
        static void Main(string[] args)
        {      int choice;
            double val,EGP;
            Console.WriteLine("Enter your Choice :\n 1- Dollar to EGP \n 2- EGP to Dollar  ");
            choice = int.Parse(Console.ReadLine());

            switch (choice)
            {
                case 1:
                    double dollar;
                    Console.Write("Enter the Dollar Amount :");
                    dollar = double.Parse(Console.ReadLine());
                    Console.Write("Enter the Dollar Exchange Rate :");
                    val = double.Parse(Console.ReadLine());
                    EGP = dollar * val;
                    Console.WriteLine("{0} Dollar Equals {1} EGP", dollar, EGP);
                    break;
                case 2:
                    Console.Write("Enter the EGP Amount :");
                    EGP = double.Parse(Console.ReadLine());
                    Console.Write("Enter the Dollar Exchange Rate :");
                    val = double.Parse(Console.ReadLine());
                    dollar = EGP / val;
                    Console.WriteLine("{0} EGP Equals {1} Dollars", EGP, dollar);
                    break;
               
            }
            Console.ReadLine();
        }
    }
}

Answer 1

在Console.Readline()之后加上Main(null)即可。

Answer 2

解决此问题的一种方法是使用 do-while 循环。下面的代码将运行通过 choice 选择和转换，然后要求用户继续。如果选择是“y”，那么它会要求用户再次选择，否则退出 main 方法。

public static void Main(string[] args)
{
    int choice;
    double val, EGP;
    string userSelection = "y";
    do
    {
        Console.WriteLine("Enter your Choice :\n 1- Dollar to EGP \n 2- EGP to Dollar  ");
        choice = int.Parse(Console.ReadLine());

        switch (choice)
        {
            case 1:
                double dollar;
                Console.Write("Enter the Dollar Amount :");
                dollar = double.Parse(Console.ReadLine());
                Console.Write("Enter the Dollar Exchange Rate :");
                val = double.Parse(Console.ReadLine());
                EGP = dollar * val;
                Console.WriteLine("{0} Dollar Equals {1} EGP", dollar, EGP);
                break;
            case 2:
                Console.Write("Enter the EGP Amount :");
                EGP = double.Parse(Console.ReadLine());
                Console.Write("Enter the Dollar Exchange Rate :");
                val = double.Parse(Console.ReadLine());
                dollar = EGP / val;
                Console.WriteLine("{0} EGP Equals {1} Dollars", EGP, dollar);
                break;

        }
        Console.WriteLine("Enter Y to choose again...");
        userSelection = Console.ReadLine();
    }
    while (userSelection.ToLower() == "y");
}

您可以将短信和选择更改为您想要的任何内容。

当我完成转换汇率的任务时，我想 return 到启动程序时出现的主菜单

When I finish my task of converting exchange rate , I want to return to the main menu that appears when I start the program

c#

menu

console-application

csharpcodeprovider