1typedef struct node {
 2  struct node *left;
 3  struct node *right;
 4  int data;
 5} BTree;
 6
 7BTree *btree_initialize(int data);
 8BTree *btree_insert(BTree *tree, int data);
 9int btree_height(BTree *tree);
10void btree_inspect(BTree *tree);
11BTree *btree_generate(int leaves);