static void Main(string[] args)
    {
        Console.WriteLine("Press u0022Enteru0022 to play!");
        int num = 0;
        void WaitForKey(ConsoleKey key)
        {
            while (Console.ReadKey(true).Key != key)
            {

            }
        }
        for (int i = 1; i <= 10; i++)
        {
            WaitForKey(ConsoleKey.Enter);
            Console.Write("{0}", num);
            num++;
        }
    }

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

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            TextWriter OutSt = Console.Out;
            while (1 == 1)
            {
                Console.SetOut(TextWriter.Null);
                ConsoleKeyInfo KeyInfo = Console.ReadKey();

                if (KeyInfo.Modifiers == ConsoleModifiers.Control & KeyInfo.Key == ConsoleKey.E) { Console.SetOut(OutSt); Console.WriteLine("Print string"); };

                if (KeyInfo.Modifiers == ConsoleModifiers.Alt & KeyInfo.Key == ConsoleKey.E) { break; };

            }
        }
    }
}