Objective-C的第二課

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今天學習了繼承, 屬性, 多態

 

作業:動物父類, 貓科子類, 獅子孫子類;

#import <Foundation/Foundation.h>@interface Animal : NSObject@end    //動物類#import <Foundation/Foundation.h>@interface Animal : NSObject@end    //動物類#import "Animal.h"@interface Feline : Animal- (void)eyes;- (void)tail;- (void)flid;@end    //貓科動物類#import "Animal.h"@interface Feline : Animal- (void)eyes;- (void)tail;- (void)flid;@end    //貓科動物類#import "Feline.h"@interface Lion : Feline- (void)character;- (void)body;@end    //獅子類#import "Lion.h"@implementation Lion- (void)character{    NSLog(@"%@", @"Lion character fierce and cruel");    //性格兇殘}- (void)body{    NSLog(@"%@", @"Lion A strong");  //身體強壯}@end    //獅子類#import "ViewController.h"#import "Lion.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.    Animal *animal;        Feline *feline;　　//定義對象    feline = [[Feline alloc] init];　　//初始化    [feline flid];　　//列印行為    [feline eyes];    [feline tail];    [feline release];            Lion *lion;    lion = [[Lion alloc] init];    [lion character];    [lion body];        }- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end

 

Objective-C的第二課