fengshu.h,fengshu.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

  //  Person *p =[[Person alloc] init];

    FengShu *f1 =[[FengShu alloc] initWithA:4 B:6];

    [f1 reduce];

    [f1 print];

    FengShu *f2 =[[FengShu alloc] initWithA:3 B:6];

    [f2 add:f1];

    [f2 print];

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    // Override point for customization after application launch.

    self.window.backgroundColor = [UIColor whiteColor];

    [self.window makeKeyAndVisible];

    return YES;

}

-(void)dealloc

{

  [_name release];_name=nil//euqals to self.name=nil

   [_address release];

   [super dealloc];