//  main.m8，思考&实现:
//设计一个”狗“类
//1> 属性
//* 颜色
//* 速度(单位是m/s)
//* 性别
//* 体重(单位是kg)
////  OC-1
//
//  Created by madhavan on 15/9/8.
//  Copyright (c) 2015年 madjie. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface Person:NSObject

{       @public
    NSString *name;
    NSString *dog;
   
}

@end
@implementation Person



@end
#pragma mark-
//创建狗 类....狗类的声明
@interface Dog:NSObject
{
@public
    //实例变量.成员变量.属性
    NSString *_color;
    int _speed;
    NSString *_sex;
    float _weight;
   
}
//对象方法,定义形参
-(void)eat:(NSString *)foodname;
-(void)wangWang;
-(void)run;
-(BOOL)biJiao:(Dog *)dog1;//传入对象
-(int)suDu:(Dog *)dog1speed;
@end
#pragma mark-
//类的实现
@implementation Dog
//行为 方法的具体实现
-(void)eat:(NSString *)foodname{
    _weight += 0.5;
    NSLog(@"吃的食物%@,当前体重%.2f",foodname,_weight);
}
-(void)wangWang{
    NSLog(@"狗狗信息:%@,%d,%@,%.2f",_color,_speed,_sex,_weight);
}
-(void)run{
    _weight -= 0.5;
    NSLog(@"速度是%d,跑完体重%.2f",_speed,_weight);
}
-(BOOL)biJiao:(Dog *)dog1{
    if(_color == dog1->_color){
        return YES;
    }
    return NO;
   
}
-(int)suDu:(Dog *)dog1{
    return _speed - dog1->_speed;
}

@end
int main(){
    @autoreleasepool {
        Dog *dog = [Dog new];
        dog->_color = @"白色";
        dog->_speed = 34;
        dog->_sex = @"母狗狗";
        dog->_weight = 40.5;
        
        [dog wangWang];
        [dog eat:@"一根大骨头"];
        [dog run];
        
        Dog *dog1 = [[Dog alloc]init];
        dog1->_color = @"黑色";
        dog1->_speed = 24;
        dog1->_sex = @"公狗狗";
        dog1->_weight = 35.5;
        
        [dog1 wangWang];
        [dog1 eat:@"两根骨头"];
        [dog1 run];
        int a = [dog biJiao:dog1];
        NSLog(@"%d",a);
        int b = [dog suDu:dog1];
        NSLog(@"%d",b);
    }
}

#import <Foundation/Foundation.h>
@interface Person:NSObject

{       @public
    NSString *name;
    NSString *dog;     //此处是不是应该为Dog *dog;
   
}

@end
速度：void类型就可以了。
if (_speed > dog1->_speed)NSLog(@"当前的狗更快");
else if(_speed < dog1->_speed)NSLog(@"参数传递来的狗更快");
elseNSLog(@"两只狗一样快");