ruby class and method are not working : <p>I am new in ruby and was trying to write a method to see the result this is my code </p>

<pre><code>class Dog
  def speak
  puts "woof-woof"
end
harry= Dog.new()
harry.speak
</code></pre>

<p>Result:
woof-woof <br/>
pink <br/>
why does the result give me pink and not woof-woof please help</p>
