A Question about dereferencing pointer to incomplete type In C programming
- by user552279
Hi, can you explain this error for me?
Blockquote
///////////////////////////////
In my A.h file:
struct TreeNode;
struct TreeHead;
typedef struct TreeNode * Node;
typedef struct TreeHead * Head;
///////////////////////////////
In my A.c file:
struct TreeNode {
char* theData;
Node Left;
Node Right;
} ;
struct TreeHead{
int counter;
char type;
Node Root;
};
Head Initialisation() {
Head treeHead;
treeHead = malloc(sizeof (struct TreeHead));
treeHead-Root = malloc(sizeof (struct TreeNode));
return treeHead;
}
///////////////////////////////
In my Main.c file:
Head head;
Node tree;
int choose =5;
head = Initialisation();
(head-Root) = tree; //When compiling, this line has an error: error: dereferencing pointer to incomplete type
Blockquote
haed-Root will return a Node pointer, tree is also a Node pointer. So why error is dereferencing pointer to "incomplete" type?
