Objective-C Programming

You can build iPhone applications with Objective-C.

Objective-C is an object-oriented programming language. It was named after the concept of adding objects to the C language.

Objective C was introduced with NeXTSTEP and OPENSTEP, and was considerably extended in application due to its use with the Cocoa libraries under Mac OS X or the GNUstep libraries. However, you can program in Objective-C without these libraries if you wish.

Because not everyone uses OPENSTEP or Mac OS X, we will introduce these library-specific details later.

Familiarity with the C programming language is required, as Objective-C shares a lot with it, hence its name.

Contents

• Objective-C concepts
  • The basic concepts of object-oriented programming in terms of Objective-C terminology.
• Getting Started
  • Invoking Objective-C compilers
• Objective-C syntax
  • The basic details of how to write classes in Objective-C. Writing the interface and implementation.
• Objective-C in depth
  • Objective-C techniques, using the `Object` class, categories, protocols.
• Objective-C advanced features
  • Advanced Objective-C, selectors, message forwarding, archiving.

See also

• C Programming
• C++ Programming
• Java Programming
• Programming Mac OS X_with Cocoa for Beginners