dereferencing pointer to incomplete type

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1. 
   
2. #include <stdio.h>
   
3. #include <ctype.h>
   
4. #include <stdlib.h>
   
5. #include <stdbool.h>    // For bool, false, true
   
6. #include <string.h>     // For strcmp()
   
7. 
   
8. struct Family * get_person(void);
   
9. 
   
10. struct Famliy *pmember1;
    
11. struct Family *pmember2;
    
12. bool set_ancestry_fuck(struct Famliy *pmember1, struct Family *pmember2);
    
13. 
    
14. 
    
15. 
    
16. struct Date
    
17. {
    
18.     int day;
    
19.     int month;
    
20.     int year;
    
21. };
    
22. 
    
23. 
    
24. struct Family
    
25. {
    
26.     struct Date dob;
    
27.     char name[20];
    
28.     char father[20];
    
29.     char mother[20];
    
30.     struct Family *next;            /* Pointer to next structure     */
    
31.     struct Family *previous;        /* Pointer to previous structure */
    
32.     struct Family *p_to_pa;         /* Pointer to father structure   */
    
33.     struct Family *p_to_ma;         /* Pointer to mother structure   */
    
34. };
    
35. 
    
36. 
    
37. int main(void)
    
38. {
    
39.     struct Family * first   = NULL; /* Pointer to first person     */
    
40.     struct Family * current = NULL; /* Pointer to current person   */
    
41.     struct Family * last    = NULL; /* pointer to last person      */
    
42.     char more = '\0';               /* Test value for ending input */
    
43.     for ( ; ; ){
    
44.         printf("\nDo you want to enter details of a%s person (Y or N)? ",
    
45.                first != NULL ? "nother" : "");
    
46.         scanf(" %c", &more);
    
47.         if (tolower(more) == 'n')
    
48.             break;
    
49.         printf("\n");// 为了美观
    
50. 
    
51.         current = get_person();
    
52. 
    
53.         if (first == NULL){
    
54.             first = current;    /* Set pointer to first Family */
    
55.             last  = current;    /* Remember fot next iteration */
    
56.         }
    
57.         else{
    
58.             last->next = current;       /* Set next address for previous Family */
    
59.             current->previous = last;   /* Set previous address for current     */
    
60.             last = current;             /* Remember for next iteration          */
    
61.         }
    
62. 
    
63.     }
    
64. 
    
65.     /** Now tell them what we know **/
    
66. 
    
67.     /** Ouput Family data in reverse order **/
    
68.     while (current != NULL){
    
69.         printf("\n");// 为了美观
    
70.         printf("\n%s was born %d/%d/%d, and has %s and %s as parents.",
    
71.         current->name, current->dob.day, current->dob.month,
    
72.         current->dob.year, current->father, current->mother);
    
73.         last = current;                 /* Svae pointer to enable memory to be freed */
    
74.         current = current->previous;    /* current points to previous list           */
    
75.         free(last);                     /* Free memory for the Family we output      */
    
76.     }
    
77.     printf("\n");// 为了美观
    
78. 
    
79.     return 0;
    
80. }
    
81. 
    
82. 
    
83. 
    
84. /** Function to input data on Family members **/
    
85. struct Family * get_person(void)
    
86. {
    
87.     struct Family * temp;
    
88. 
    
89.     /* Allocate memory for a structure */
    
90.     temp = (struct Family *)malloc(sizeof(struct Family));
    
91. 
    
92.     printf("\nEnter the name of the person: ");                   /* Read the Family's name */
    
93.     scanf("%s", temp -> name);
    
94. 
    
95.     printf("\nEnter %s's date of birth (day month year): ", temp->name);
    
96.     scanf("%d %d %d", &temp->dob.day, &temp->dob.month, &temp->dob.year);
    
97. 
    
98.     printf("\nWho is %s's father? ", temp->name);
    
99.     scanf("%s", temp -> father);    /* Get the father's name */
    
100. 
     
101.     printf("\nWho is %s's mother? ", temp->name);
     
102.     scanf("%s", temp -> mother);    /* Get the mother's name */
     
103. 
     
104.     temp->next = temp->previous = NULL;// set pointers to NULL
     
105.     temp->p_to_pa = temp->p_to_ma = NULL;// set pointer to NULL
     
106. 
     
107.     printf("\n");//为了美观
     
108. 
     
109.     return temp;
     
110. }
     
111. 
     
112. bool set_ancestry(struct Famliy *pmember1, struct Family *pmember2)
     
113. {
     
114.     if (strcmp(pmember1->father, pmember2->name) == 0){
     
115.         //pmember1->p_to_fa = pmember2;
     
116.         return true;
     
117.     }
     
118.     if (strcmp(pmember1->mather, pmember2->name) == 0){
     
119.         //pmember1->p_to_ma = pmember2;
     
120.         return true;
     
121.     }
     
122.     else
     
123.         return false;
     
124. }
     
125. 
     

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linux_c_py_php

打中文, 描述问题, 谢谢.

bruceteen

虽然能猜到楼主想干什么，但这种行为本身是很恶劣的

你应该这么说：
如下代码，编译时某某行报错，错误提示为 dereferencing pointer to incomplete type，请问怎么改正？

然后别人才可以告诉你，Famliy 拼错了

bruceteen

虽然能猜到楼主想干什么，但这种行为本身是很恶劣的

你应该这么说：
如下代码，编译时某某行报错，错误提示为 dereferencing pointer to incomplete type，请问怎么改正？

然后别人才可以告诉你，Famliy 拼错了

蓝天下的乌鸦

嗯回复 2# linux_c_py_php


   

蓝天下的乌鸦

一时心急 什么都没注意 下次不会了回复 4# bruceteen


   

蓝天下的乌鸦

  版主删帖吧 我这个烂提问方式 回过头来看 确实很