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Objective-C Research Paper

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Submitted By bigyute
Words 2068
Pages 9
Research of Objective-C
October 9, 2012

Introduction
There is little doubt in today’s dynamic and fast moving technology market that Objective-C is a powerful, high-level, flexible programming language that has been around since the early 1980s and has the staying power to last a long time. Objective-C is an extension of the programming language C developed by Brad Cox and Tom Love to support the object oriented features of Smalltalk another programming language. Objective-C is the main language from which Apple’s MAC OS X for Desktops and laptops and iOS for iPhones and iPads are derived. There have been variants to this language as well, Objective-C++ and Objective-C 2.0 which proves the sustainability of this language. Due its portability, Objective-C has shown its flexibility and the ability to adapt to the ever changing and fast moving arena of mobile devices especially from Apple.
What is Objective-C?
Objective-C is a reflective programming language which aims to provide object orientated concepts and Smalltalk messaging to C. GNU Compiler Collection (GCC) provides a compiler for Objective-C, however due to the rich library support on OpenStep based operating systems (Mac OS X, IPhone, GNUstep) it is typically only used on these platforms. Objective-C is implemented as an augmentation to the C language. It is a superset of C which means that any Objective-C compiler can also compile C.
To illustrate what Objective-C looks like as a language I will show you what it looks like to compile a simple Hello World type Objective-C app from the command line.

We will first make a directory:
-[dcbz@megatron:~/code]$ mkdir HelloWorld
-[dcbz@megatron:~/code]$ mkdir HelloWorld/build
And then create a header file for a new class
-[dcbz@megatron:~/code]$ cat > HelloWorld/Talker.h
#import <Foundation/Foundation.h>
@interface Talker : NSObject

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