class Door
  def initialize
    @open = true
  end

  def open
    @open = true
  end

  def close
    @open = false
  end

  def open?
    @open
  end

  def status
    if open?
      "Door is open."
    else
      "Door is closed."
    end
  end
end

front_door = Door.new
puts front_door.status
front_door.close
puts front_door.status
front_door.open
puts front_door.status

Door is open.
Door is closed.
Door is open.