December 2011
Beginner
600 pages
11h 25m
English
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4. Data Types and Expressions
In this chapter, we take a look at the basic data types and describe some fundamental rules for forming arithmetic expressions in Objective-C.
Data Types and Constants
You have already encountered the Objective-C basic data type int. As you will recall, a variable declared to be of type int can be used to contain integral values only—that is, values that do not contain decimal digits.
The Objective-C programming language provides three other basic data types: float, double, and char. A variable declared to be of type float can be used for storing floating-point numbers (values containing decimal digits). The double type is the same as type float, typically with roughly twice the range. Finally, the char data type ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.