c - 在 ')' token 和 '*' 的冲突类型之前预期为 'function'

Question

大家好，我正在做一个类(class)项目，将文件中的单词添加到 trie 中，将其与另一个文件进行比较并显示某些信息。我似乎无法弄清楚为什么会出现这些错误。在我的 dictstat.c 文件中，这是我的代码。

  1 #include <stdio.h>
  2 #include <stdlib.h>
  3 #include <ctype.h>
  4 #include "prototypes.h"
  5 
  6 typedef struct TrieNode
  7  {
  8  int isAWord ;
  9  char letter;
 10  int words;
 11  struct TrieNode* children[26];
 12  }Node;
 13 
 14 typedef struct TrieADT
 15  {
 16   Node* root;
 17  }MainTrie;
 18 
 19 int main(int argc, char *argv[]){
 20 
 21         MainTrie FirstTrie;
 22         MainTrie *Trie;
 23         Trie = &FirstTrie;
 24 
 25         FILE *f, *f2;
 26 
 27         if(argc !=  3){
 28           return 1;
 29         }
 30 
 31         f = fopen(argv[1], "r");
 32         f2 = fopen(argv[2], "r");
 33 
 34         if(f == NULL || f2 == NULL){
 35            return 1;
 36         }
 37 
 38         makeTrie(Trie);
 39 
 40         return 0;
 41 }
 42 
 43 
 44   Node *getNode(void) {
 45 
 46         int i;
 47         Node *newNode = NULL;
 48         newNode = (Node *) malloc(sizeof(Node));//allocates space for new node
 49         newNode->isAWord = 0;
 50         newNode->letter = '/';
 51 
 52    if( newNode ){
 53 
 54         for(i = 0; i < 26; i++){
 55 
 56            newNode->children[i] = NULL;//Sets elements in array equal to Null
 57 
 58         }
 59            return newNode;
 60         }
 61       }
 62 
 63 
 64   void makeTrie(MainTrie *pTrie){
 65 
 66         pTrie->root = getNode();
 67   }
 68 
 69  int addToTrie(char word[], int lengthOfWord, Node *TNode, int point){
 70 
 71         if(lengthOfWord == 0){//if the length of the word is 0 stop the function
 72 
 73             printf("No word.\n");
 74             return 0;
 75         }
 76 
 77         if(point >= lengthOfWord){//if the pointer is beyond the end of a word
 78 
 79            TNode->isAWord = 1;//then set the node to be the end of the word
 80            return 1;
 81         }
 82 
 83         if(TNode == NULL){//if Node is null end function
 84 
 85                 printf("Pointer is null.\n");
 86                 return 0;
 87         }
 88 
 89         if( TNode->children[(word[point])-'a'] == NULL ){//if there is no neighbor with letter
 90 
 91                 Node *newNode;
 92                 newNode = getNode();//Makes new node
 93                 newNode->letter = word[point];//Puts letter in new node
 94                 TNode->children[(word[point])-'a'] = newNode;//puts new node into trie
 95                 point = point + 1;//increments down the tree
 96                 printf("adding\n");
 97                 return addToTrie(&word[point-1], lengthOfWord, TNode->children[(word[point]) - 'a'], point);//Calls function again
 98         }
 99 
100         else{
101 
102                 printf("There is a neighbor.");//No new node to create
103                 return addToTrie(&word[point-1], lengthOfWord, TNode->children[(word[point]) - 'a'], point);
104             }
106
107    }
108  }

这是我的 prototypes.h 文件。

  1 void readDict(FILE* dict_file);
  2 void scanData(FILE* data_file);
  3 void makeTrie(MainTrie *pTrie);
  4 int addToTrie(char word[], int lengthOfWord, Node* TNode, int point);

当我尝试同时编译 .c 文件和 .h 文件时，我收到以下错误消息:

In file included from dictstat.c:4:
prototypes.h:3: error: expected ‘)’ before ‘*’ token
prototypes.h:4: error: expected declaration specifiers or ‘...’ before ‘Node’
dictstat.c:64: warning: conflicting types for ‘makeTrie’
dictstat.c:38: note: previous implicit declaration of ‘makeTrie’ was here
dictstat.c:69: error: conflicting types for ‘addToTrie’
prototypes.h:4: note: previous declaration of ‘addToTrie’ was here
prototypes.h:1: error: expected ‘)’ before ‘*’ token
prototypes.h:2: error: expected ‘)’ before ‘*’ token
prototypes.h:3: error: expected ‘)’ before ‘*’ token
prototypes.h:4: error: expected declaration specifiers or ‘...’ before ‘Node’

我是新来的，所以如果我搞砸了这个问题的格式或者已经回答了，我深表歉意。提前致谢。

Answer 1

您在源文件中定义类型 MainTrie(和 TrieNode)，但在头文件(在函数原型(prototype)中)中包含对它们的引用。

解决方案:将 typedef/struct 声明移动到头文件。