Answer Posted / crispin

/*
* Simple tree node representation
*/
struct node_t {
struct node_t *left;
struct note_t *right;
};

/*
* Return the maximum depth of the tree given a pointer
* to its root node.
*/
unsigned int
tree_depth (node_t *root)
{
return (NULL == root) ? 0 :
MAX(tree_depth(root->left, root->right)+1);
}

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