1. 
   
2. /*
   
3. 定义一个学生,学生有学号 姓名  还有 C语言分数 和JAVA语言分数  总分 平均分
   
4. */
   
5. #import <Foundation/Foundation.h>
   
6. @interface Student : NSObject
   
7. {
   
8.    
   
9.     char *_name;
   
10.     int  _cScort;
    
11.     int  _javaScort;
    
12.     int  _conuntScort;
    
13.     int  _avgScort;
    
14. }
    
15. 
    
16. - (void)setName:(char *)name;
    
17. - (void)setCScort:(int)cScort;
    
18. - (void)setJavaScort:(int)javaScort;
    
19. 
    
20. - (char *)name;
    
21. - (int)cScort;
    
22. - (int)javaScort;
    
23. 
    
24. - (int)conuntScort;
    
25. - (int)avgScort;
    
26. 
    
27. - (void)printInfo;
    
28. @end
    
29. 
    
30. @implementation Student
    
31. 
    
32. - (void)setName:(char *)name
    
33. {
    
34.     _name = name;
    
35. }
    
36. - (void)setCScort:(int)cScort
    
37. {
    
38.     _cScort = cScort;
    
39.     _conuntScort = _cScort + _javaScort;
    
40.     _avgScort = _conuntScort / 2;
    
41. }
    
42. - (void)setJavaScort:(int)javaScort
    
43. {
    
44.     _javaScort = javaScort;
    
45.     _conuntScort = _cScort + _javaScort;
    
46.     _avgScort = _conuntScort / 2;
    
47. 
    
48. }
    
49. 
    
50. - (char *)name
    
51. {
    
52.     return _name;
    
53. }
    
54. - (int)cScort
    
55. {
    
56.     return _cScort;
    
57. }
    
58. - (int)javaScort
    
59. {
    
60.     return _javaScort;
    
61. }
    
62. 
    
63. - (int)conuntScort
    
64. {
    
65.     return _conuntScort;
    
66. }
    
67. - (int)avgScort
    
68. {
    
69.     return _avgScort;
    
70. }
    
71. 
    
72. - (void)printInfo
    
73. {
    
74.     NSLog(@"学生是%s",_name);
    
75. }
    
76. @end
    
77. 
    
78. 
    
79. int main()
    
80. {
    
81.     Student *s = [Student new];
    
82.     [s setCScort:90];
    
83.     [s setJavaScort:90];
    
84.     [s setName:"dd"];//这边使用中文为什么不行?????
    
85.     NSLog(@"%s的总分是=%d,平均=%d",[s name],[s conuntScort],[s avgScort]);
    
86.     return 0;
    
87. }
    
88. 
    
89. 
    
90. 
    
91. 
    
92. 
    
93. 
    
94. 
    
95. 
    
96. 
    
97. 
    
98. 
    
99. 
    

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为啥 [s setName:"dd"];//这边使用中文为什么不行?????   使用英文就可以!!!?@!?@!@!

NSObject  这个市做啥子用的>??

虽然汉子只占一个字节,但汉字不是char类型的哦

1. /*
   
2. 定义一个学生,学生有学号 姓名  还有 C语言分数 和JAVA语言分数  总分 平均分
   
3. */
   
4. #import <Foundation/Foundation.h>
   
5. @interface Student : NSObject
   
6. {
   
7.    
   
8.     NSString *_name;
   
9.     int  _cScort;
   
10.     int  _javaScort;
    
11.     int  _conuntScort;
    
12.     int  _avgScort;
    
13. }
    
14. 
    
15. - (void)setName:(NSString *)name;
    
16. - (void)setCScort:(int)cScort;
    
17. - (void)setJavaScort:(int)javaScort;
    
18. 
    
19. - (NSString *)name;
    
20. - (int)cScort;
    
21. - (int)javaScort;
    
22. 
    
23. - (int)conuntScort;
    
24. - (int)avgScort;
    
25. 
    
26. - (void)printInfo;
    
27. @end
    
28. 
    
29. @implementation Student
    
30. 
    
31. - (void)setName:(NSString *)name
    
32. {
    
33.     _name = name;
    
34. }
    
35. - (void)setCScort:(int)cScort
    
36. {
    
37.     _cScort = cScort;
    
38.     _conuntScort = _cScort + _javaScort;
    
39.     _avgScort = _conuntScort / 2;
    
40. }
    
41. - (void)setJavaScort:(int)javaScort
    
42. {
    
43.     _javaScort = javaScort;
    
44.     _conuntScort = _cScort + _javaScort;
    
45.     _avgScort = _conuntScort / 2;
    
46.    
    
47. }
    
48. 
    
49. - (NSString *)name
    
50. {
    
51.     return _name;
    
52. }
    
53. - (int)cScort
    
54. {
    
55.     return _cScort;
    
56. }
    
57. - (int)javaScort
    
58. {
    
59.     return _javaScort;
    
60. }
    
61. 
    
62. - (int)conuntScort
    
63. {
    
64.     return _conuntScort;
    
65. }
    
66. - (int)avgScort
    
67. {
    
68.     return _avgScort;
    
69. }
    
70. 
    
71. - (void)printInfo
    
72. {
    
73.     NSLog(@"学生是%@",_name);
    
74. }
    
75. @end
    
76. 
    
77. 
    
78. int main()
    
79. {
    
80.     Student *s = [Student new];
    
81.     [s setCScort:90];
    
82.     [s setJavaScort:90];
    
83.     [s setName:@"阿斯蒂芬"];//这边使用中文为什么不行?????
    
84.     NSLog(@"%@的总分是=%d,平均=%d",[s name],[s conuntScort],[s avgScort]);
    
85.     return 0;
    
86. }

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把char  换成NSString 就ok了

bieny 发表于 2015-5-15 19:48
把char  换成NSString 就ok了

那个NSObject是啥意思?可以换成别的?

NSObject是foundation框架里的基类,你的所有类都直接或间接继承自他,直接继承自他的不可以换,间接的可以  比如你一个dog继承自animal,dog里的:后面就放animal, animal里还是NSObject,这时animal是NSObject的子类,dog是NSObject得间接子类

bieny 发表于 2015-5-15 19:56
NSObject是foundation框架里的基类,你的所有类都直接或间接继承自他

了解!感谢!

char * 只能装ASCII码符号