From: "Jan E." <lists@...>
Date: 2012-06-12T01:32:28+09:00
Subject: Re: Chris Pine "Learning Programming" Question

Hi,

Michael Sung wrote in post #1064054:
> QUESTION 1: For example, if I choose 99 as my number, left = number, and
> write = left/100, wouldn't write = 99/100?  In that case, why would
> write > 0 return 'one hundred'?

When you divide two integers in Ruby, you get an integer division rather 
than a "normal" division. You probably remember doing long division in 
elementary school. For example, 7 : 3 is 2 with a remainder of 1. This 
is exactly how integer division works: 7/3 is 2. And 99/100 is 0.

So integer division always yields an integer rather than a float 
(fractional number). If you want to do "normal" division, either the 
dividend or the divisor has to be a float.



Michael Sung wrote in post #1064054:
> QUESTION 2: The second part of this code is just plain confusing me,
> perhaps because I still can't figure out the first part which it builds
> upon.

The method basically calculates the hundreds, tens and ones of the 
number and builds the name from it.

For example, the number 53 consists of 5 tens and 3 ones. The 5 tens 
mean that the name begins with "fifty". And the 3 ones mean that the 
name ends with "three".

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