using System;

public class Program

{

    static void Main(String[] args)

    {

        char key;

        Console.Write("Press a number key:");

        key =Convert.ToChar(Console.ReadLine());

        switch (key)

        {

            case '0':Console.WriteLine("You Pressed 0");break;

                case '1':Console.WriteLine("You Pressed 1");break;

                case '2':Console.WriteLine("You Pressed 2");break;                     

                case '3':Console.WriteLine("You Pressed 3");break;

                case '4':Console.WriteLine("You Pressed 4");break;

                case '5':Console.WriteLine("You Pressed 5");break;

                case '6':Console.WriteLine("You Pressed 6");break;

                case '7':Console.WriteLine("You Pressed 7");break;

                case '8':Console.WriteLine("You Pressed 8");break;

                case '9':Console.WriteLine("You Pressed 9");break;

            default: Console.WriteLine("Not allowed!");break;

        }

    }       

}