//

//  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，如何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。如何实现方法的不同性？

    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

{

    //能够动态的检測动物的类型用到的一个类？

    if([animal isKindOfClass:[Dog class]])

    {

        //须要强制类型转换

        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