[C#] 계산기: Calculator

using System;

namespace MyFirstProgram
{
    internal class Program
    {

        static void Main(string[] args) // main method
        {
            // 계산기: calculator
            do
            {

                double num1 = 0;
                double num2 = 0;
                double result = 0;

                Console.WriteLine("------------------");
                Console.WriteLine("Calculator Program");
                Console.WriteLine("------------------");

                Console.Write("Enter number 1: ");
                num1 = Convert.ToDouble(Console.ReadLine());

                Console.Write("Enter number 2: ");
                num2 = Convert.ToDouble(Console.ReadLine());

                Console.WriteLine("Enter an option: ");
                Console.WriteLine("\t+: Add");
                Console.WriteLine("\t-: Subtract");
                Console.WriteLine("\t*: Multiply");
                Console.WriteLine("\t/: Divide");
                Console.Write("Enter an option: ");

                switch (Console.ReadLine())
                {
                    case "+":
                        result = num1 + num2;
                        Console.WriteLine($"Your result: {num1} + {num2} = {result}");
                        break;
                    case "-":
                        result = num1 - num2;
                        Console.WriteLine($"Your result: {num1} - {num2} = {result}");
                        break;
                    case "*":
                        result = num1 * num2;
                        Console.WriteLine($"Your result: {num1} * {num2} = {result}");
                        break;
                    case "/":
                        result = num1 / num2;
                        Console.WriteLine($"Your result: {num1} / {num2} = {result}");
                        break;
                }
                Console.Write("Would you like to continue? (Y = yes/N = no): ");
            } while (Console.ReadLine().ToUpper() == "Y");
            Console.WriteLine("Bye");
            

        }
    }
}