Question

I am doing the Ruby Monk tutorial and got stuck on a problem. Here it is:

“Write a method called add_two that adds 2 to any number passed to it and returns the result. Yes, please feel free to experiment using next in addition to the more obvious route of simply adding the integer 2 to the incoming number.”

I started with:

def add_two(number)
 number + number
end

But i am not sure how to account for negative numbers

Any help would be great!

Answer 1

Basically what they are asking you to do is to use next which is a method of the Integer class.

Ruby API – Integer#next

It should look something like this

def add_two(number)     
  number.next.next
end