Chapter 2. Data types, variables, and constants
- Storing numeric-, logic-, and text-based data
- Creating your own data types
- Converting values between different data types
- Formatting values for presentation
- Introducing the Rental Manager sample application
Virtually every application needs to store, represent, or process data of some kind, whether a list of calendar appointments, the current weather conditions in New York, or the high scores of a game.
Because Objective-C is a statically typed language, whenever you declare a variable, you must also specify the type of data you expect to store in it. As an example, the following variable declaration declares a variable named zombieCount, which is of type int: