Created
September 2, 2015 16:45
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| class Pet | |
| attr_reader :color, :breed | |
| attr_accessor :name | |
| def initialize(color, breed) | |
| @color = color | |
| @breed = breed | |
| @hungry = true | |
| end | |
| def hungry? | |
| if @hungry | |
| puts "I\'m hungry!" | |
| else puts "I\'m full!" | |
| end | |
| @hungry | |
| end | |
| def feed(food) | |
| puts "Mmmm, " + food + "!" | |
| @hungry = false | |
| end | |
| end | |
| class Cat < Pet | |
| def speak | |
| puts "Meow!" | |
| end | |
| end | |
| class Dog < Pet | |
| def speak | |
| puts "Woof!" | |
| end | |
| end | |
| 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 | |
| puppy = Dog.new("black", "Staffordshire Terrier") | |
| puppy.speak | |
| puts puppy.breed |
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