OCP Principle Animal

animal.rb

class Animal
  def breathe(animal)
    if animal == "cat"
      puts "inhale and exhale"
    elsif animal == "dog"
      puts "inhale and exhale"
    elsif animal == "cow"
      puts "inhale and exhale"
    end
  end

  def speak(animal)
    if animal == "cat"
      puts "meow"
    elsif animal == "dog"
      puts "bark"
    elsif animal == "cow"
      puts "moo"
    end
  end
end

cat = Animal.new
cat.breathe("cat") #=> "inhale and exhale"
cat.speak("cat") #=> "meow"


dog = Animal.new
dog.breathe("dog") #=> "inhale and exhale"
dog.speak("dog") #=> "bark"


cow = Animal.new
cow.breathe("cow") #=> "inhale and exhale"
cow.speak("cow") #=> "moo"