Ruby Practice

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("grey", "Persian")
puts "Let\'s inspect our new cat:"
puts kitty.inspect
puts "What class does our new pet 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

fav_foods.rb

def fav_foods
    food_array = [] # can also use array.new for new empty array
    3.times do
        puts "Name a favorite food"
        food_array << gets.chomp
    end
    p food_array
    food_array.each do |food| # do something to each element in food_array; that element is to be referred to as food
        puts "I like #{food} too!" # the thing we are doing
    end # ends the loop
    puts "Your favorite foods are #{food_array.join(", ")}."
end
fav_foods

a = [1,2,3,4,5]

p a.map {|x| x*x} # map method
p a[1..4] # slice method

pet.rb

class Pet
    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
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 pet 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("golden", "Labrador")
puts "What color is our dog?"
puts puppy.color
puts "Let\'s give our dog a name"
puppy.name = "Coco"
puts puppy.name
puts "Our dog can make noise"
puts puppy.speak
puts puppy.breed

program.rb

puts "hello"
p "hello"
def greeting
    puts "Please enter your name"
    name = gets.chomp
    puts "Hello " + name
end
greeting

program2.rb

if (5+5==10)
    puts "This is true"
else
    puts "This is false"
end

program3.rb

def choose
    puts "Do you like programming? Yes or no please."
    choice = gets.chomp
    case choice.downcase
    when "yes"
        puts "That\'s great!"
    when "no"
        puts "That\'s too bad!"
    when "maybe"
        puts "Glad you are giving it a chance!"
    else
        puts "I have no idea what that means"
    end
end
choose

program4.rb

# number = 0
# while (number <= 10) do
#     p "The number is now #{number}"
#     number += 1
# end

(0..10).each do |n|
    p "The new number is #{n}"
end