using System;

​

namespace curs6

{

    class Program

    {

        static void Main(string[] args)

        {

            string level1=PrintMenuLevel1();

            if (!string.Equals(level1, "exit", StringComparison.OrdinalIgnoreCase))

            {

                string level2 = PrintMenuLevel2(level1);

                if (!string.Equals(level2, "back", StringComparison.OrdinalIgnoreCase))

                {

                    Console.WriteLine($"You selected: {level1} / {level2}");

                }

            }

        }

​

        static string PrintMenuLevel1()

        {

            Console.WriteLine("1.File");

            Console.WriteLine("2. Edit");

            Console.WriteLine("3. Debug");

            Console.WriteLine("Select level 1 option , or type ext to exit:");

            return Console.ReadLine();

        }

​

        static string PrintMenuLevel2(string level1)

        {

            if (string.Equals(level1, "1", StringComparison.OrdinalIgnoreCase))

            {

                Console.WriteLine("1.File");

                Console.WriteLine(" 1.1 New");

                Console.WriteLine(" 1.2 Open");

                Console.WriteLine(" 1.3 Save");

            }

            else if (string.Equals(level1, "2", StringComparison.OrdinalIgnoreCase))

            {

                Console.WriteLine("2. Edit");

                Console.WriteLine(" 2.1 Cut");

                Console.WriteLine(" 2.2 Copy");

                Console.WriteLine(" 2.3 Paste");

            }

            else if (string.Equals(level1, "3", StringComparison.OrdinalIgnoreCase))

            {

                Console.WriteLine("3. Debug");

                Console.WriteLine(" 3.1 Start Debugging");

                Console.WriteLine(" 3.2 Start Without Debugging");

            }

            Console.WriteLine("Select level 2 option, or type 'back' to go to level 1 selection:");

            return Console.ReadLine();

        }

​

        //static void ReadOption();

        //{

​

        //}

    }

​

}