求眼力好的大神，帮我看看这2程序有神马不同..一段能编译，一段不能..神马情况啊

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1. #include <iostream>
   
2. #include <string>
   
3. using namespace std;
   
4. 
   
5. class vehicle
   
6. {
   
7. public:
   
8. // vehicle(){};
   
9. virtual void run()
   
10. {
    
11. cout<<"vehicle run"<<endl;
    
12. }
    
13. virtual void stop()
    
14. {
    
15. cout<<"vehicle stop"<<endl;
    
16. 
    
17. }
    
18. };
    
19. 
    
20. class bicyle : virtual public vehicle//
    
21. {
    
22. public:
    
23. void run()
    
24. {
    
25. cout<<"bicyle run"<<endl;
    
26. }
    
27. void stop()
    
28. {
    
29. cout<<"bicyle stop"<<endl;
    
30. }
    
31. };
    
32. 
    
33. class motorcar:virtual public vehicle//
    
34. {
    
35. public:
    
36. void run()
    
37. {
    
38. cout<<"motorcar run"<<endl;
    
39. }
    
40. void stop()
    
41. {
    
42. cout<<"motorcar stop"<<endl;
    
43. }
    
44. 
    
45. };
    
46. 
    
47. class motorcycle:public bicyle,motorcar
    
48. {
    
49. public:
    
50. void run()
    
51. {
    
52. cout<<"motorcycle run"<<endl;
    
53. }
    
54. void stop()
    
55. {
    
56. cout<<"motorcycle stop"<<endl;
    
57. }
    
58. };
    
59. 
    
60. void show(vehicle *p)
    
61. {
    
62. p->run();
    
63. p->stop();
    
64. }
    
65. 
    
66. 
    
67. 
    
68. 
    
69. 
    
70. int main()
    
71. {
    
72. vehicle *p,a;
    
73. bicyle b;
    
74. motorcar c;
    
75. motorcycle d;
    
76. p=&a;
    
77. show(p);
    
78. p=&b;
    
79. show(p);
    
80. p=&c;
    
81. show(p);
    
82. p=&d;
    
83. show(p);
    
84. 
    
85. return 0;
    
86. 
    
87. }

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上面那段是可以编译的，下面这段却不能，为什么啊。。老师帮我改了，却没有告诉错的位置

1. 
   
2. #include <iostream>
   
3. #include <string>
   
4. using namespace std;
   
5. class vehicle
   
6. {
   
7. public:
   
8. // vehicle(){};
   
9. virtual void run()
   
10. {
    
11.   cout<<"vehicle run"<<endl;
    
12. }
    
13. virtual void stop()
    
14. {
    
15.   cout<<"vehicle stop"<<endl;
    
16. }
    
17. };
    
18. class bicyle : public vehicle
    
19. {
    
20. public:
    
21. void run()
    
22. {
    
23.   cout<<"bicyle run"<<endl;
    
24. }
    
25. void stop()
    
26. {
    
27.   cout<<"bicyle stop"<<endl;
    
28. }
    
29. };
    
30. class motorcar:public vehicle
    
31. {
    
32. public:
    
33. void run()
    
34. {
    
35.   cout<<"motorcar run"<<endl;
    
36. }
    
37. void stop()
    
38. {
    
39.   cout<<"motorcar stop"<<endl;
    
40. }
    
41. };
    
42. class motorcycle:public bicyle,motorcar
    
43. {
    
44. public:
    
45. void run()
    
46. {
    
47.   cout<<"motorcycle run"<<endl;
    
48. }
    
49. void stop()
    
50. {
    
51.   cout<<"motorcycle stop"<<endl;
    
52. }
    
53. };
    
54. void show(vehicle *p)
    
55. {
    
56. p->run();
    
57. p->stop();
    
58. }
    
59. 
    
60. 
    
61. int main()
    
62. {
    
63. vehicle *p,a;
    
64. bicyle b;
    
65. motorcar c;
    
66. motorcycle d;
    
67. p=&a;
    
68. show(p);
    
69. p=&b;
    
70. show(p);
    
71. p=&c;
    
72. show(p);
    
73. p=&d;
    
74. show(p);
    
75. return 0;
    
76. }

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worlddragon

强烈支持楼主ing……

.._再_

求各种大神啊........  求亮爷！！！

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worlddragon 发表于 2013-5-28 12:15

                               
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强烈支持楼主ing……

打酱油的就不要回复了哇

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这里能@的吗 --求亮爷  @小亮1201

s0512

virtual public

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s0512 发表于 2013-5-28 12:37

                               
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virtual public

什么意思，第几行错误啊

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求不沉贴啊...求帮助，不要路人啊

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发觉在这里问问题好像已经没有用了，都没有人来回答的...一开始我以为这里寻求帮助比较快，后来发现去百度还是比较好...大家都只是看不帮助的..发那么多回复还不是想把这帖子顶上去让人看到，，不知道的人还以为我在灌水，刷YB呢。.以后不求助这里了