Guess Number Code For Beer

guess_number.rb

class GuessNumber
  attr_accessor :min, :max

  def initialize
    @min = 1
    @max = 1000
  end

  def guess
    return (max + min) / 2
  end

  def lower
    @max = guess - 1
  end

  def higher
    @min = guess + 1
  end
end

guesser = GuessNumber.new
response = ''

attempts = 0
while response != 'correct'
  if attempts == 10
    exit
  end

  puts guesser.guess
  STDOUT.flush
  response = STDIN.gets.strip
  attempts += 1

  if response == 'higher'
    guesser.higher
  elsif response == 'lower'
    guesser.lower
  end
end