1. /*
   
2. 2.设计2个类，类之间的关系自拟（比如继承、组合）
   
3. 1> 身材数据
   
4. (1)属性
   
5. * 身高
   
6. * 体重
   
7. * 手长
   
8. * 脚长
   
9. 
   
10. (2)方法
    
11. * 属性相应的set和get方法
    
12. 
    
13. 2> 人
    
14. (1)属性
    
15. * 年龄
    
16. * 身高
    
17. * 体重
    
18. * 手长
    
19. * 脚长
    
20. 
    
21. (2)方法
    
22. * 属性相应的set和get方法
    
23. */
    
24. #import <Foundation/Foundation.h>
    
25. @interface ShenCai : NSObject
    
26. {
    
27.     double _height;
    
28.     int _weight;
    
29.     int _shouChang;
    
30.     int _jiaoChang;
    
31. }
    
32. - (void)setHeight:(double)height;
    
33. - (double)height;
    
34. - (void)setWeight:(int)weight;
    
35. - (int)weight;
    
36. - (void)setShouChang:(int)shouChang;
    
37. - (int)shouChang;
    
38. - (void)setJiaoChang:(int)jiaoChang;
    
39. - (int)jiaoChang;
    
40. @end
    
41. @implementation ShenCai
    
42. - (void)setHeight:(double)height
    
43. {
    
44.     _height = height;
    
45. }
    
46. - (double)height
    
47. {
    
48.     return _height;
    
49. }
    
50. - (void)setWeight:(int)weight
    
51. {
    
52.     _weight = weight;
    
53. }
    
54. - (int)weight
    
55. {
    
56.     return _weight;
    
57. }
    
58. - (void)setShouChang:(int)shouChang
    
59. {
    
60.     _shouChang = shouChang;
    
61. }
    
62. - (int)shouChang
    
63. {
    
64.     return _shouChang;
    
65. }
    
66. - (void)setJiaoChang:(int)jiaoChang
    
67. {
    
68.     _jiaoChang = jiaoChang;
    
69. }
    
70. - (int)jiaoChang
    
71. {
    
72.     return _jiaoChang;
    
73. }
    
74. @end
    
75. @interface Person : NSObject
    
76. {
    
77.     ShenCai *_sc;
    
78.     int _age;
    
79. }
    
80. - (void)setAge:(int)age;
    
81. - (int)age;
    
82. - (void)setSc:(ShenCai *)sc;
    
83. - (ShenCai *)sc;
    
84. @end
    
85. @implementation Person
    
86. - (void)setAge:(int)age
    
87. {
    
88.     _age = age;
    
89. }
    
90. - (int)age
    
91. {
    
92.     return _age;
    
93. }
    
94. - (void)setSc:(ShenCai *)sc
    
95. {
    
96.     _sc = sc;
    
97. }
    
98. - (ShenCai *)sc
    
99. {
    
100.     return _sc;
     
101.     NSLog(@"%f", _sc->_height);
     
102. }
     
103. @end
     
104. int main()
     
105. {
     
106.     Person *p = [Person new];
     
107.     ShenCai *p1 = [ShenCai new];
     
108.     [p1 setWeight:48];
     
109.     [p1 setHeight:168];
     
110.     [p1 setJiaoChang:90];
     
111.     [p setSc:p1];
     
112.     [p sc];
     
113.     //如何输出[p sc]?
     
114.     return 0;
     
115. }
     
116. //请问如何输出Person的ShenCai属性？

复制代码

代码如下：

1.     NSLog(@"height = %f", [[p sc] height]);
   
2.     NSLog(@"weight = %d", [[p sc] weight]);
   
3.     NSLog(@"shouChang = %d", [[p sc] shouChang]);
   
4.     NSLog(@"jiaoChang = %d", [[p sc] jiaoChang]);

复制代码

Thank you!