Objective-C

Objective-C adds object-oriented features to the C programming language. It is commonly used on Apple's Mac OS X and iOS. There are some differences between using the Apple/Cocoa runtime environment as compared to using the GCC compiler and the GNUstep runtime environment.

/* This sample program uses random numbers to emulate six sided dice */ #import <stdio.h> #import <time.h> #import <Foundation/Foundation.h> @interface SixSidedDie : NSObject { int dieNumber; } -(void)roll; -(void)display; @end int main( void ) { id myDie = [SixSidedDie alloc]; srand( time( 0 ) ); [myDie roll]; [myDie display]; } @implementation SixSidedDie -(void)roll { dieNumber = (rand() % 6) + 1; } -(void)display { printf( "Die number is %d\n", dieNumber ); } @end