Changes

== What is an Objective-C Variable ==

Variables are essentially locations in computer memory that are reserved for storing the data used by an application. Each variable is given a name by the programmer and assigned a value. The name assigned to the variable may then be used in the Objective-C code to access the value assigned to the variable. This access can involve either reading the value of the variable, or changing the value. It is, of course, the ability to change the value of variables which gives them the name ''variable''.