1 #import <Foundation/Foundation.h>
2
3 typedef enum {GenderMan, GenderFemale} Gender;
4
5 typedef enum {ColorRed, ColorBlue, ColorGreen} Color;
6
7 typedef struct
8 {
9 int year;
10 int month;
11 int day;
12 } Date;
13
14
15 @interface Dog : NSObject
16 {
17 @public
18 float weight;
19 Color color;
20 }
21 - (void) eat;
22 - (void) run;
23
24 @end
25
26
27 @interface Student : NSObject
28 {
29 @public
30 char *name;
31 Gender gender;
32 Date birthday;
33 double weight;
34 Color favariteColor;
35 Dog *dog;
36 }
37
38 - (void) eat;
39 - (void) run;
40 - (void) walkDog;
41 - (void) feedDog;
42 - (void) print;
43
44 @end
45
46 @implementation Student
47 - (void) eat
48 {
49 weight++;
50 NSLog(@"吃吃吃，体重增加了1KG， 现在体重是%f", weight);
51 }
52
53 - (void) run
54 {
55 weight--;
56 NSLog(@"跑跑跑,体重减去了1KG，现在体重是%f", weight);
57 }
58
59 - (void) print
60 {
61 NSLog(@"这个学生的资料-》姓名:%s, 性别:%d, 生日:%d-%d-%d, 体重:%f, 喜爱的颜色:%d", name, gender, birthday.year, birthday.month, birthday.day, weight, favariteColor);
62 }
63
64 - (void) walkDog
65 {
66 [dog run];
67 }
68
69 - (void) feedDog
70 {
71 [dog eat];
72 }
73 @end
74
75
76 @implementation Dog
77 - (void) eat
78 {
79 NSLog(@"喂狗啦!!!");
80 weight++;
81 NSLog(@"狗狗吃吃吃，体重增加了1KG， 现在体重是%f", weight);
82 }
83
84 - (void) run
85 {
86 NSLog(@"遛狗啦!!!!");
87 weight--;
88 NSLog(@"狗狗跑跑跑,体重减去了1KG，现在体重是%f", weight);
89 }
90 @end
91
92 int main()
93 {
94 Student *stu = [Student new];
95 stu->name = "Jack";
96 stu->gender = GenderMan;
97 Date d = {1989, 8, 10};
98 stu->birthday = d;
99 stu->weight = 50;
100 stu->favariteColor = ColorRed;
101
102 Dog *dog = [Dog new];
103 stu->dog = dog;
104
105 [stu eat];
106 [stu feedDog];
107 [stu print];
108 [stu walkDog];
109 [stu feedDog];
110
111 return 0;
112 }
