Ruby

Instance Variable

class Carmaker
  def turn
    puts "The car is turning"
  end
end

car1 = Carmaker.new
car1.turn

class Carmaker
  def turn(direction)
    puts "The car is turning"
  end

  def current_direction
    puts "The current direction is"
  end
end

car1 = Carmaker.new
car1.turn("left")

class Carmaker
  def turn(direction)
    @direction = direction
    puts "The car is turning"
  end

  def current_direction
    puts "The current direction is #{@direction}"
  end
end

car1 = Carmaker.new
car1.turn("left")
car1.current_direction