using System;

​

class Game {

    static void Main(string[] args) {

        bool running = true;

        string menu = "**************\n" + 

            "Menu:\n" + 

            "1 - New Game\n" + 

            "2 - Load Game\n" + 

            "3 - Options\n" + 

            "4 - Quit\n" + 

            "**************";

        string prompt = "Please select the option: ";

        string invalidPrompt = "Invalid Input. Please select the option again: ";

        bool validSelection = true;

        while(running) {

            Console.Clear();

            Console.WriteLine(menu);

            Console.Write(validSelection ? prompt : invalidPrompt);

            validSelection = true;

            string selection = Console.ReadLine();

            switch (selection) {

                case "1":

                    Console.WriteLine("Selected: " + selection + " - New Game");

                    break;

                case "2":

                    Console.WriteLine("Selected: " + selection + " - Load Game");

                    break;

                case "3":

                    Console.WriteLine("Selected: " + selection + " - Options");

                    break;

                case "4":

                    running = false;

                    break;

                default:

                    validSelection = false;

                    break;

        }

        Console.Clear();

        Console.WriteLine("Application successfully quit!");

        Environment.Exit(0);

        }

    }

}