passing pointers

[looptesting]

Hey guys I was just writing a simple tree structure that returns a node pointer when a node is created. The compiler will not let me do so as it says that "Error: identifier Node is undefined" at line 2

here is the part of the tree.cpp

Node RBtree::*createNode(int x){
	Node* node = new Node;
	node->parent = NULL;
	node->lchild = NULL;
	node->rchild = NULL;
	node->data = x;
	node->color = 'r';
}

with part of tree.h

    private:
        struct Node{
           Node* parent;
           Node* lchild;
		   Node* rchild;
           int data;
		   char color;
        };
        Node* root;
    public:
        Node *createNode(int);

Any feedback would be appreciated thank you.

[helios]

The struct is private. You can't return private types from public functions. How would the caller know about a private type?

[looptesting]

I thought that since I used RBtree:: it had access to the Node struct?
After moving it into the public field I have the same problem

[helios]

After moving it into the public field I have the same problem

In this case, it's because you only enter the RBtree namespace after the BRtree:: part of the definition.

//You can use 'Node' to refer to 'RBtree::Node' only after this point.
//                    v
RBtree::Node *RBtree::createNode(int x){ //... 

[looptesting]

Oh ok I got it.
Thank you!