I've recently been reading a bunch of software engineering books in an attempt to improve
my skills. This is no mean feat, as I'm already the best programmer in my company. Code
Complete is absolutely the best book I've ever seen on the subject. It is a must read for
everyone who wants to program. I would make it required reading for all students and
computer professionals. It's very readable, and if you follow it's advice it will change
The answer to this one is quite simple; however it takes some time to figure out.
The main thing that you need to remember is that you can not devide by zero.
A =B, therefore (A-B) = 0.
When you cancel out the (A-B) on both sides (line 4) you are dividing by zero.
Therfore the answer is undefined.