3.4: Object-Oriented Programming I

cat.rb

class Cat
  attr_reader :color, :breed
  attr_accessor :name
  
  def initialize(color, breed)
    @color = color
    @breed = breed
    @hungry = true
  end

  def feed(food)
    puts "Mmmm, " + food + "!"
    @hungry = false
  end

  def hungry?
    if @hungry
      puts "I'm hungry!"
    else
      puts "I'm full!"
    end
    @hungry
  end

  def speak
    puts "Meow!"
  end
end

kitty = Cat.new("yellow", "Persian")

breakChunk = '/******************/'

puts breakChunk

puts "Let's inspect our new cat:"
puts kitty.inspect
puts "What class does our new cat belong to?"
puts kitty.class
puts "Is our new cat an object?"
puts kitty.is_a?(Object)

puts breakChunk

puts "Let's give our new cat a name"
kitty.name = "Betsy"
puts kitty.name

puts breakChunk

puts "Is our cat hungry now?"
kitty.hungry?
puts "Let's feed our cat"
kitty.feed("tuna")
puts "Is our cat hungry now?"
kitty.hungry?

puts breakChunk

puts "Our cat can make noise"
kitty.speak