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Learn to Program, 2nd Edition
book

Learn to Program, 2nd Edition

by Chris Pine
March 2009
Intermediate to advanced content levelIntermediate to advanced
194 pages
4h
English
Pragmatic Bookshelf
Content preview from Learn to Program, 2nd Edition

Mind Your Variables

When writing a program, I always try to have a good feel for what each variable is pointing to: a number, a string, or whatever. Like in the favorite number program, at some point you’ll have the person’s favorite number as a string, and at another point you’ll have it as an integer. It’s important to keep track of which is which, and you can do this by keeping them in different variables.

And name the variables so it’s easy to tell what they are at a glance. If I had a variable for someone’s name, I might call it name, and I would just assume it was a string. If I had someone’s age in a variable, I might call it age, and I’d assume it was an integer. So if I needed to have the string version of someone’s age, I’d try to ...

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Publisher Resources

ISBN: 9781680500172Errata