Name four important data types found in Objective-C

Here are four important data types found in Objective-C:

1. id: This is a generic object pointer type that can point to any Objective-C object. It is commonly used when the exact type of an object is not known or when you want to write code that can work with objects of different classes.

2. NSString: This is the Objective-C class for representing strings. It provides methods for creating, manipulating, and comparing strings.

3. NSArray: This is the Objective-C class for represen...