CHAPTER 3
Variables
Variables Defined
Objective-C stores information in variables. These are divided into two types: primitive types and composite types. Primitive variables store one piece of information, such as a number or a character. Composite variables store a set of information, such as three related numbers and a character.
Data Types
Table 3-1 shows the most common primitive data types that you will see in Objective-C.
Table 3-1. Objective-C Data Types
Data Type |
Format Specifier |
Description |
|---|---|---|
NSInteger |
%li |
Signed integer |
NSUInteger |
%lu |
Unsigned integer |
BOOL |
%i |
Boolean (YES/NO) |
CGFloat |
%f |
Floating point |
Note Objective-C ...
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