tree.h

#define TRUE 1
#define FALSE 0

typedef int elem;//typos dedomenon

struct node{
	elem data;//dedomena 
	struct node *right;//deksi paidi
	struct node *left;//aristero paidi
};

typedef struct node TREE_NODE;//deixnei ton deikti
typedef struct node *TREE_PTR;//synonimo tou deikti komvou

void TR_init(TREE_PTR *root);
int TR_empty(TREE_PTR root);
elem TR_data(TREE_PTR p);
int TR_insert_root(TREE_PTR *root,elem x);
int TR_insert_right(TREE_PTR node,elem x);
int TR_insert_left(TREE_PTR node,elem x);
int TR_delete_root(TREE_PTR *root,elem *x);
int TR_delete_right(TREE_PTR parent,elem *x);
int TR_delete_left(TREE_PTR parent,elem *x);
void TR_preorder(TREE_PTR v);
void TR_inorder(TREE_PTR v);
void TR_postorder(TREE_PTR v);
void TR_print_node(TREE_PTR v);
int TR_search_BST(TREE_PTR root,elem x);