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class Animal
def initialize(name)
@name = name
end
def eat
puts("#{@name} is eating.")
end
def speak
puts("#{@name} says !")
end
def sleep
puts("#{@name} sleeps; ")
end
end
class Zoo
def initialize(number_animals)
@animals = []
number_animals.times do |i|
animal = new_animal("Animal#{i}")
@animals << animal
end
end
def action
@animals.each {|animal| animal.speak}
@animals.each {|animal| animal.eat}
@animals.each {|animal| animal.sleep}
end
end
class AnimalZoo < Zoo
def new_animal(name)
Animal.new(name)
end
end
pond = AnimalZoo.new(3)
pond.action
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