//// main.m// 继承////#import <Foundation/Foundation.h>#import "Animal.h"#import "Cat.h"#import "Dog.h"#import "FeedMan.h"int main(int argc, const char * argv[]){// Animal * animal = [Animal new];//// [animal eat];//// [animal sleep];// //忘记引入头文件// Animal * cat =[[Cat alloc]init];//// [cat eat];// Cat * cat = [[Cat alloc]init];//// [cat catchMouse];//// Dog * dog = [[Dog alloc]init];//// [dog bark];////父类指针保存子类对象，，怎样调用子类对象的方法？// Animal * animal_cat = [[Cat alloc]init];//// FeedMan * man = [[FeedMan alloc]init];//// [man showName:animal_cat];//[animal_cat eat];// [animal_cat setName:@"Hello Cat"];Animal * animal_dog = [[Dog alloc]init];FeedMan * man = [[FeedMan alloc]init];[man showName:animal_dog];[man FeedAnimal:animal_dog];//子类调用父类的方法，怎样实现方法的不同性？return 0;}//// FeedMan.h// 继承//#import "Animal.h"@interface FeedMan : NSObject-(void)showName:(Animal *)animal;-(void)FeedAnimal:(Animal *)animal;@end//// FeedMan.m// 继承#import "FeedMan.h"#import "Dog.h"#import "Cat.h"@implementation FeedMan-(void)FeedAnimal:(Animal *)animal{if ([animal isKindOfClass:[Dog class]] ) {Dog * dog = (Dog *)animal;[dog eat];}}-(void)showName:(Animal *)animal{//可以动态的检测动物的类型用到的一个类？if([animal isKindOfClass:[Dog class]]){//需要强制类型转换Dog * dog = (Dog *)animal;[dog bark];}else if ([animal isKindOfClass:[Cat class]]){Cat * cat = (Cat *)animal;[cat catchMouse];}}@end//// Animal.h// 继承#import <Foundation/Foundation.h>@interface Animal : NSObject{NSString * _name;int _age;}@property NSString * name;@property int age;-(void)eat;-(void)sleep;-(void)showAge;@end//// Animal.m// 继承//#import "Animal.h"@implementation Animal-(void)eat{NSLog(@"动物吃东西");}-(void)sleep{NSLog(@"动物睡觉了");}-(void)showAge{NSLog(@"小动物的年龄");}@end//// Dog.h// 继承//#import "Animal.h"@interface Dog : Animal{}-(void)bark;-(void)eat;@end// Dog.m// 继承//#import "Dog.h"@implementation Dog-(void)bark{NSLog(@"小狗汪汪叫");}-(void)eat{NSLog(@"小狗吃东西");}@end//// Cat.h// 继承#import "Animal.h"@interface Cat : Animal{}-(void)catchMouse;-(void)eat;@end// Cat.m// 继承//#import "Cat.h"@implementation Cat{}-(void)catchMouse{NSLog(@"猫咪会捉老鼠！");}-(void)eat{NSLog(@"小猫吃小鱼");}@end
版权声明：本文为博主原创文章，未经博主允许不得转载。
别为荒漠的艰难而哭泣，只为奔流入海功成名就那一天，
