Learn Ruby the Hard Way: A Simple and Idiomatic Introduction to the Imaginative World of Computational Thinking with Code, Third Edition

Exercise 19. Functions and Variables

Functions may have been a mind-blowing amount of information, but do not worry. Just keep doing these exercises and going through your checklist from the last exercise and you will eventually get it.

There is one tiny point that you might not have realized, which we’ll reinforce right now. The variables in your function are not connected to the variables in your script. Here’s an exercise to get you thinking about this:

ex19.rb

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 1    def cheese_and_crackers(cheese_count, boxes_of_crackers)  2      puts "You have #{cheese_count} cheeses!"  3      puts "You have #{boxes_of_crackers} boxes of crackers!"  4      puts "Man that's enough for a party!"  5      puts "Get a blanket.\n" ...