#include <stdio.h>

int main ()
{
  char c;
  puts ("Enter q to exit:");
  do {
    c = getchar();
    putchar(c);
  } while (c != 'q');
  return 0;
}

using System;
using System.IO;

public static void Main(String[] args)
{
  ConsoleKeyInfo k;
  Console.WriteLine("Enter q to exit:");
  do {
    k = Console.ReadKey();
    Console.WriteLine(k.KeyChar);
  } while (k.KeyChar != 'q');
  return 0;
}