OC Composite Assembly Computer

Keyboard class

#import <Foundation/Foundation.h>

@interface Keyboard:nsobject

@property (strong,nonatomic) NSString *brand;

@end

#import "Keyboard.h"

@implementation Keyboard

-(NSString *) description

{

return [NSString stringwithformat:@ "%@", _brand];

}

@end

Mouse class

#import <Foundation/Foundation.h>

@interface Mouse:nsobject

@property (strong,nonatomic) NSString *brand;

@end

#import "Mouse.h"

@implementation Mouse

-(NSString *) description

{

return [NSString stringwithformat:@ "%@", _brand];

}

@end

Display class

#import <Foundation/Foundation.h>

@interface Displayer:nsobject

@property (strong,nonatomic) NSString *brand;

@end

#import <Foundation/Foundation.h>

@interface Displayer:nsobject

@property (strong,nonatomic) NSString *brand;

@end

Chassis class

#import <Foundation/Foundation.h>

@interface Engine:nsobject

@property (strong,nonatomic) NSString *brand;

@end

#import "Engine.h"

@implementation Engine

-(NSString *) description

{

return [NSString stringwithformat:@ "%@", _brand];

}

@end

Computer class

#import <Foundation/Foundation.h>

#import "Keyboard.h"

#import "Mouse.h"

#import "Displayer.h"

#import "Engine.h"

@interface Computer:nsobject

@property (strong,nonatomic) Mouse *mouse;

@property (strong,nonatomic) Keyboard *keyboard;

@property (strong,nonatomic) Displayer *displayer;

@property (strong,nonatomic) Engine *engline;

-(void) run;

@end

#import "Computer.h"

#import "Keyboard.h"

#import "Mouse.h"

#import "Displayer.h"

#import "Engine.h"

@implementation Computer

-(Instancetype) init

{

self = [super init];

if (self) {

Mouse *mouse= [[Mouse alloc] init];

[Email protected] "BENQ";

Self.mouse=mouse;

Keyboard *keyboard=[keyboard New];

[Email protected] "BENQ";

Self.keyboard=keyboard;

Displayer *displayer=[displayer New];

[Email protected] "Sumsun";

Self.displayer=displayer;

Engine *engline=[engine New];

[Email protected] "Mac mini";

Self.engline=engline;

}

return self;

}

-(void) run

{

NSLog (@ "%@", [_mouse description]);

NSLog (@ "%@", [_keyboard description]);

NSLog (@ "%@", [_displayer description]);

NSLog (@ "%@", [_engline description]);

}

@end

Main function

#import <Foundation/Foundation.h>

#import "Computer.h"

int main (int argc, const char * argv[]) {

@autoreleasepool {

Computer *computer=[[computer alloc] init];

Keyboard *keyboard=[[keyboard alloc] init];

Mouse *mouse=[[mouse alloc] init];

Engine *engline=[[engine alloc] init];

Displayer *displary=[[displayer alloc] init];

//

Computer.mouse=mouse;

Computer.keyboard=keyboard;

Computer.engline=engline;

Computer.displayer=displary;

[Email protected] "BENQ";

[Email protected] "BENQ";

[Email protected] "Sumsun";

[Email protected] "Mac mini";

[Computer run];

}

return 0;

}

Run results

OC Composite Assembly Computer