using System;

​

namespace ConsoleApp9

{

    class Tv

    {

        private bool onoff = false;

​

        public string[] channel = {"Shant", "Kentron", "BridgeTV", "Rossia24", "TV1000"};

        private int channum = 0;

​

        public void off()

        {

            onoff = false;

        }

​

        public void on()

        {

            onoff = true;

        }

​

        public void plus()

        {

           if (channum == 4)

            {

                channum = 0;

            } 

           else

            {

                channum++;

            }

            Console.WriteLine("Dzer aliqi hamarn e " + channum + " " + channel[channum]);

        }

​

        public void minus()

        {

            if (channum == 0)

            {

                channum = 4;

            }

            else

            {

                channum--;

            }

            Console.WriteLine("Dzer aliqi hamarn e " + channum + " " + channel[channum]);

        }

​

        public void choose(int n)

        {

            if (n >= 0 && n <= 5)

            {

                channum = n;

                Console.WriteLine("Dzer aliqi hamarn e " + channum + " " + channel[channum]);

            }

            else

            {

                Console.WriteLine("Aydpisi aliq chka");

            }

        }

    }

    class Program

    {

        static void Main(string[] args)

        {

            Console.Write("Yntrel aliqy (0 - 4): ");

            int res;

            int kanal;

            var isint = false;

            var mytv = new Tv();

            string message = "";

​

            while (message != "off")

            {

                message = Console.ReadLine();

​

                if (message == "+")

                {

                    mytv.plus();

                }

                else if (message == "-") {

                    mytv.minus();

                }

                else

                {

                    isint = Int32.TryParse(message, out res);

​

                    if (isint)

                    {

                        mytv.choose(kanal = Convert.ToInt32(message));

                    }

                    else 

                    {

                        if (message == "off")

                        {

                            Console.WriteLine("Bari Gisher!");

                        }

                    }

                }

            }

​

        }

    }

}

​