#!/usr/bin/env ruby
# -*- coding:utf-8 -*-
require 'curses'
include Curses
init_screen
noecho
begin
  while true
    setpos(0,0)
    addstr("    ")
    setpos(0,0)
    addstr(getch.to_s)
    refresh
    sleep(0.3)
  end
ensure
  close_screen
end