1 // 2 //  Fridge.m 3 //  面向对象 4 // 5 //  Created by macos on 14-8-10. 6 //  Copyright (c) 2014年 macos. All rights reserved. 7 // 8  9 #import "Fridge.h"10 11 @implementation Fridge12 @synthesize name,opend,array;13 -(id) initWidthName:(NSString *)iname14 {15     if (self = [super init]) {16         self.name = iname;17         opend = false;18         self.array = [[NSMutableArray alloc] init];19         NSLog(@"初始化一台：%@电冰箱",self.name);20     }21     return self;22 }23 24 -(BOOL) openDoor25 {26     if (opend) {27         NSLog(@"门已经打开，关闭后才能打开");28     }29     else30     {31         opend = true;32         NSLog(@"成功打开冰箱的门");33     }34     return opend;35 }36 37 -(BOOL) putIn:(id)something38 {39     if (opend) {40         [array addObject:something];41         NSLog(@"%@成功放入冰箱中,物品数量%lu",something,[array count]);42     }43     else44     {45         NSLog(@"%@不能放入冰箱中,物品数量%lu：冰箱门未打开",something,[array count]);46     }47     return opend;48 }49 50 -(BOOL) closeDoor51 {52     if (opend) {53         opend = false;54         NSLog(@"成功关闭冰箱的门");55     }56     else57     {58         NSLog(@"无法关闭冰箱的门：门已经关闭");59     }60     return opend;61 }62 @end

 1 // 2 //  Elephant.m 3 //  面向对象 4 // 5 //  Created by macos on 14-8-10. 6 //  Copyright (c) 2014年 macos. All rights reserved. 7 // 8  9 #import "Elephant.h"10 11 @implementation Elephant12 @synthesize name;13 14 -(id) initWidthName:(NSString *) iname15 {16     NSLog(@"初始化一头：%@象",iname);17     if (self = [super init]) {18         self.name=iname;19     }20     return self;21 }22 23 -(NSString *) description24 {25     return [[NSString alloc] initWithFormat:@"[%@象]",self.name];26 }27 @end

 1 // 2 //  main.m 3 //  OOPDemo 4 // 5 //  Created by macos on 14-8-10. 6 //  Copyright (c) 2014年 macos. All rights reserved. 7 //  面向对象设计模式 8  9 #import <Foundation/Foundation.h>10 #import "Fridge.h"11 #import "Elephant.h"12 13 int main(int argc, const char * argv[])14 {15 16     @autoreleasepool {17         Fridge *fridge = [[Fridge alloc] initWidthName:@"海尔"];18         Elephant *elephant = [[Elephant alloc] initWidthName:@"南美洲"];19         [fridge openDoor] &&20         fridge.opend &&21         [fridge putIn:elephant] &&22         [fridge closeDoor];23     }24     return 0;25 }