ДЗ: Консольное меню

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleMenu
{
    class Program
    {
        static void Main(string[] args)
        {
            string userCommand;
            int winHeight = 16;
            int winWidth = 96;
            bool backgroundIsBlack = true;
            string password = "admin";

            Console.SetWindowSize(winWidth, winHeight);
            Console.WriteLine("Список команд: reduceWinSize, increaseWinSize, invertColors, changePassword, clear, esc");
            Console.WriteLine($"Default password is {password}");
            string userInput;

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

                switch (userCommand)
                {
                    case "reduceWinSize":
                        winHeight--;
                        winWidth--;
                        Console.SetWindowSize(winWidth, winHeight);
                        break;
                    case "increaseWinSize":
                        winHeight++;
                        winWidth++;
                        Console.SetWindowSize(winWidth, winHeight);
                        break;
                     case "invertColors":
                        backgroundIsBlack = !backgroundIsBlack;
                        if (backgroundIsBlack)
                        {
                            Console.BackgroundColor = ConsoleColor.Black;
                            Console.ForegroundColor = ConsoleColor.White;
                        }
                        else
                        {
                            Console.BackgroundColor = ConsoleColor.White;
                            Console.ForegroundColor = ConsoleColor.Black;
                        }
                         break;
                     case "changePassword":
                        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 "clear":
                        Console.Clear();
                         break;
                    case "esc":
                        return;
                    default:
                        Console.WriteLine("Неизвестная команда.");
                        break;
                }
            }
        }
    }
}