Hello,
So I am going through "Learn Ruby The Hard Way Exercise 19" -------------------------------------------
http://learnrubythehardway.org/book/ex19.html .
It says to run this piece of code :
def cheese_and_crackers(cheese_count, boxes_of_crackers)
puts "You have #{cheese_count} cheeses!"
puts "You have #{boxes_of_crackers} boxes of crackers!"
puts "Man that's enough for a party!"
puts "Get a blanket.\n"
end
puts "We can just give the function numbers directly:"
cheese_and_crackers(20, 30)
puts "OR, we can use variables from our script:"
amount_of_cheese = 10
amount_of_crackers = 50
cheese_and_crackers(amount_of_cheese, amount_of_crackers)
puts "We can even do math inside too:"
cheese_and_crackers(10 + 20, 5 + 6)
puts "And we can combine the two, variables and math:" cheese_and_crackers(amount_of_cheese + 100, amount_of_crackers + 1000)
which will produce this result :
$ ruby ex19.rb
We can just give the function numbers directly:
You have 20 cheeses!
You have 30 boxes of crackers!
Man that's enough for a party!
Get a blanket.
OR, we can use variables from our script:
You have 10 cheeses!
You have 50 boxes of crackers!
Man that's enough for a party!
Get a blanket.
We can even do math inside too:
You have 30 cheeses!
You have 11 boxes of crackers!
Man that's enough for a party!
Get a blanket.
And we can combine the two, variables and math:
You have 110 cheeses!
You have 1050 boxes of crackers!
Man that's enough for a party!
Get a blanket.
A little confused, what exactly is the point of the exercise --- Is it simply to introduce variables ?
It says in the text that this exercise is to reinforce the point that quote : "The variables in your function are not connected to the variables in your script." --- what does this sentence mean ?
Regards,
Gengyang
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