exercise 3.4

cat.rb

class Cat
    attr_reader :color, :breed, :name
    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#end initialize method    

kitty = Cat.new("grey", "Persian")
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 "What color is our cat?"
puts kitty.color
puts "Let's give our new cat a name"
kitty.name = "Betsy"
puts kitty.name
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 "Our cat can make noise"
kitty.speak