小编Ahm*_*ihi的帖子

错误:取消引用指向不完整类型的指针

Codeblocks在main.c第10行(print_bst(tree-> root))(解除引用不完整类型的指针)时给出了这个错误,而我正在创建二进制搜索树,但我找不到此错误的原因.

BST.h

typedef struct Node Node;
typedef struct Tree Tree;
Tree *create_bst();
Node *create_node(int data);
void insert_bst(Tree *tree);
void print_bst(Node *root);

BST.c

#include <stdio.h>
#include <stdlib.h>

typedef struct Node{
    void *dataPtr;
    int data;
    struct Node *left;
    struct Node *right;
} Node;

typedef struct Tree{
    int count;
    Node* root;
} Tree;

Tree *create_bst()
{
    Tree *tree = (Tree*) calloc(1,sizeof(Tree));
    if(tree == NULL){
        printf("calloc() failed!\n");
        return NULL;
    }

    tree->count = 0;
    tree->root = NULL;

    return tree;
}

Node *create_node(int data) …