最是销魂就是你-->Include

bellavista

做回标题党...

照着ooc.pdf练习的代码.
可是编译不过...Trace了一下.应该是Set.h的定义没有被Include到.
可是为什么Reference不到却查不出.
请各位网友帮忙了.

WINDOWS XP
Dev-C++ 4.9.9.2


========================================================================
被封之前报告下进展
编译报错为"Set.c dereferencing pointer to incomplete type "

把下面这段struct的定义从头文件转移到Set.c里面就顺利编译成功了

1. 
   
2. struct Set{
   
3.        unsigned count;
   
4. };
   
5. 
   
6. struct Object
   
7. {
   
8.        unsigned count;
   
9.        struct Set * in;
   
10. };
    

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搞不懂呢,struct的定义为啥放在Set.h就认不出来了呢

[ 本帖最后由 bellavista 于 2007-11-2 17:06 编辑 ]

flw

封之前留个名

bellavista

Dev文件如下

1. 
   
2. [Project]
   
3. FileName=bag.dev
   
4. Name=bag
   
5. UnitCount=5
   
6. Type=1
   
7. Ver=1
   
8. ObjFiles=
   
9. Includes=
   
10. Libs=
    
11. PrivateResource=
    
12. ResourceIncludes=
    
13. MakeIncludes=
    
14. Compiler=
    
15. CppCompiler=
    
16. Linker=
    
17. IsCpp=0
    
18. Icon=
    
19. ExeOutput=
    
20. ObjectOutput=
    
21. OverrideOutput=0
    
22. OverrideOutputName=
    
23. HostApplication=
    
24. Folders=
    
25. CommandLine=
    
26. UseCustomMakefile=0
    
27. CustomMakefile=
    
28. IncludeVersionInfo=0
    
29. SupportXPThemes=0
    
30. CompilerSet=0
    
31. CompilerSettings=
    
32. 
    
33. [Unit1]
    
34. FileName=main.c
    
35. CompileCpp=0
    
36. Folder=
    
37. Compile=1
    
38. Link=1
    
39. Priority=1000
    
40. OverrideBuildCmd=0
    
41. BuildCmd=
    
42. 
    
43. [Unit2]
    
44. FileName=new.h
    
45. CompileCpp=0
    
46. Folder=
    
47. Compile=1
    
48. Link=1
    
49. Priority=1000
    
50. OverrideBuildCmd=0
    
51. BuildCmd=
    
52. 
    
53. [Unit3]
    
54. FileName=Object.h
    
55. CompileCpp=0
    
56. Folder=
    
57. Compile=1
    
58. Link=1
    
59. Priority=1000
    
60. OverrideBuildCmd=0
    
61. BuildCmd=
    
62. 
    
63. [Unit4]
    
64. FileName=Set.h
    
65. CompileCpp=0
    
66. Folder=
    
67. Compile=1
    
68. Link=1
    
69. Priority=1000
    
70. OverrideBuildCmd=0
    
71. BuildCmd=
    
72. 
    
73. [Unit5]
    
74. FileName=Set.c
    
75. CompileCpp=0
    
76. Folder=
    
77. Compile=1
    
78. Link=1
    
79. Priority=1000
    
80. OverrideBuildCmd=0
    
81. BuildCmd=
    
82. 
    
83. [VersionInfo]
    
84. Major=0
    
85. Minor=1
    
86. Release=1
    
87. Build=1
    
88. LanguageID=1033
    
89. CharsetID=1252
    
90. CompanyName=
    
91. FileVersion=
    
92. FileDescription=Developed using the Dev-C++ IDE
    
93. InternalName=
    
94. LegalCopyright=
    
95. LegalTrademarks=
    
96. OriginalFilename=
    
97. ProductName=
    
98. ProductVersion=
    
99. AutoIncBuildNr=0
    
100. 
     

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bellavista

main.c

1. 
   
2. #include <stdio.h>
   
3. #include "Object.h"
   
4. #include "new.h"
   
5. #include "Set.h"
   
6. 
   
7. int main ()
   
8. {   
   
9.      void * s    =   new(Set);
   
10.      void * a    =   add(s, new(Object));
    
11.      void * b    =   add(s, new(Object));
    
12.      void * c    =   new(Object);
    
13.      if (contains(s, a) && contains(s, b))
    
14.           puts("ok");
    
15.      if (contains(s, c))
    
16.           puts("contains?");
    
17.      if (differ(a, add(s, a)))
    
18.           puts("differ?");
    
19.      if (contains(s, drop(s, a)))
    
20.           puts("drop?");
    
21.      delete(drop(s, b));
    
22.      delete(drop(s, c));
    
23. 
    
24.        return 0;
    
25. }
    
26. 
    

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new.h

1. 
   
2. void * new (const void * type, ...);
   
3. void delete (void * item);
   
4. 
   

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Object.h

1. 
   
2. void * new (const void * type, ...);
   
3. void delete (void * item);
   
4. 
   

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Set.c

1. 
   
2. #include <assert.h>
   
3. void * new (const void * type, ...)
   
4. {      
   
5.     const unsigned size = * (const unsigned *) type;
   
6.     void * p = calloc(1, size);
   
7.     assert(p);
   
8.     return p;
   
9. }
   
10. 
    
11. void delete (void * _item)
    
12. {     
    
13.       free(_item);
    
14. }
    
15. 
    
16. void * add (void * _set, const void * _element)
    
17. {   
    
18.     struct Set * set = _set;
    
19.     struct Object * element = (void *) _element;
    
20.     assert(set);
    
21.     assert(element);
    
22.     if (! element -> in)
    
23.         element -> in = set;
    
24.     else
    
25.         assert(element -> in == set);
    
26.     ++ element -> count, ++ set -> count;
    
27.     return element;
    
28. }
    
29. 
    
30. void * find (const void * _set, const void * _element)
    
31. {   
    
32.     const struct Object * element = _element;
    
33.     assert(_set);
    
34.     assert(element);
    
35.     return element -> in == _set ? (void *) element : 0;
    
36. }
    
37. 
    
38. 
    
39. int contains (const void * _set, const void * _element)
    
40. {
    
41.      return find(_set, _element) != 0;
    
42. }
    
43. 
    
44. void * drop (void * _set, const void * _element)
    
45. {   
    
46.     struct Set * set = _set;
    
47.     struct Object * element = find(set, _element);
    
48.     if (element)
    
49.     {     if (-- element -> count == 0)
    
50.           element -> in = 0;
    
51.           -- set -> count;
    
52.     }
    
53.     return element;
    
54. }
    
55. 
    
56. 
    
57. int differ (const void * a, const void * b)
    
58. {
    
59.     return a != b;
    
60. }
    
61. 
    
62. unsigned count (const void * _set)
    
63. {   
    
64.     const struct Set * set = _set;
    
65.     assert(set);
    
66.     return set -> count;
    
67. }
    
68. 
    
69. Set.h
    
70. [code]
    
71. #ifndef SET_H
    
72. #define SET_H
    
73. struct Set
    
74. {
    
75.        unsigned count;
    
76. };
    
77. 
    
78. struct Object
    
79. {
    
80.        unsigned count;
    
81.        struct Set * in;
    
82. };
    
83. 
    
84. static const unsigned _Set = sizeof(struct Set);
    
85. static const unsigned _Object = sizeof(struct Object);
    
86. const void * Set = &_Set;
    
87. const void * Object = &_Object;
    
88. 
    
89. void * add (void * set, const void * element);
    
90. void * find (const void * set, const void * element);
    
91. void * drop (void * set, const void * element);
    
92. int contains (const void * set, const void * element);
    
93. #endif
    
94. 
    

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[/code]

bellavista

原帖由 flw 于 2007-11-2 14:52 发表
封之前留个名

莫封
封了就不销魂了

nully

编译的错误信息呢？