ДЗ: Консольное меню

using System;

namespace ConsoleMenu
{
    class Program
    {
        static void Main(string[] args)
        {
            const string CommandReduceWindow = "reduceWinSize";
            const string CommandIncreaseWindow = "increaseWinSize";
            const string CommandInvertColors = "invertColors";
            const string CommandChangePassword = "changePassword";
            const string CommandClearScreen = "clear";
            const string CommandExit = "exit";

            string userCommand;
            string userInput;
            string password = "admin";
            int windowHeight = 16;
            int windowWidth = 96;
            bool isRunning = true;

            Console.SetWindowSize(windowWidth, windowHeight);
            Console.WriteLine($"Список команд: {CommandReduceWindow}, {CommandIncreaseWindow}, {CommandInvertColors}, {CommandChangePassword}, {CommandClearScreen}, {CommandExit}");
            Console.WriteLine($"Default password is \"{password}\"");

            while (isRunning)
            {
                userCommand = Console.ReadLine();

                switch (userCommand)
                {
                    case CommandReduceWindow:
                        windowHeight--;
                        windowWidth--;
                        Console.SetWindowSize(windowWidth, windowHeight);
                        break;

                    case CommandIncreaseWindow:
                        windowHeight++;
                        windowWidth++;
                        Console.SetWindowSize(windowWidth, windowHeight);
                        break;

                    case CommandInvertColors:
                        ConsoleColor consoleColor = Console.BackgroundColor;
                        Console.BackgroundColor = Console.ForegroundColor;
                        Console.ForegroundColor = consoleColor;
                        break;

                    case CommandChangePassword:
                        Console.Write("Введите старый пароль: ");
                        userInput = Console.ReadLine();

                        if (userInput == password)
                        {
                            Console.Write("Введите новый пароль: ");
                            password = Console.ReadLine();
                            Console.WriteLine("Пароль успешно изменён.");
                        }
                        else
                        {
                            Console.WriteLine("Неверно введён пароль.");
                        }
                        break;

                    case CommandClearScreen:
                        Console.Clear();
                        break;

                    case CommandExit:
                        isRunning = false;
                        break;

                    default:
                        Console.WriteLine("Неизвестная команда.");
                        break;
                }
            }
        }
    }
}