键盘类
#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
鼠标类
#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
显示屏类
#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
机箱类
#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
电脑类
#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];
mouse.brand=@"BENQ";
self.mouse=mouse;
Keyboard *keyboard=[Keyboard new];
keyboard.brand=@"BENQ";
self.keyboard=keyboard;
Displayer *displayer=[Displayer new];
displayer.brand=@"SUMSUN";
self.displayer=displayer;
Engine *engline=[Engine new];
engline.brand=@"Mac mini";
self.engline=engline;
}
return self;
}
-(void)run
{
NSLog(@"%@",[_mouse description]);
NSLog(@"%@",[_keyboard description]);
NSLog(@"%@",[_displayer description]);
NSLog(@"%@",[_engline description]);
}
@end
main 函数
#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;
// mouse.brand=@"BENQ";
// keyboard.brand=@"BENQ";
// displary.brand=@"SUMSUN";
// engline.brand=@"Mac mini";
[computer run];
}
return 0;
}
运行结果
