inheritance.rb

class Restaurant
  attr_reader :name
  def initialize(name, city)
    @name, @city = name, city
  end

  def to_s
    return "Welcome to #{@name}, in #{@city}"
  end
end

class FastFood < Restaurant
  def initialize(name, city, prep_time)
    super(name, city)
    @prep_time = prep_time
  end

  def to_s
    puts "*******************"
    super
  end
end

class Gastronomic < Restaurant
  def initialize(name, city, stars)
    super(name, city)
    @stars = stars
  end

  def to_s
    return "Bienvenue chez #{@name}, à #{@city}"
  end
end
mcdo = FastFood.new("Mcdo", "Paris", 5)
puts mcdo.name
bocuse = Gastronomic.new("Bocuse", "Lyon", 3)