#include<stdio.h>
#include<stdlib.h>
typedef struct treenode{
    int elem;
    int color;
    struct treenode *left,*right,*parent;
}treenode_t;
treenode_t *create_node(int elem){
    treenode_t *newnode=(treenode_t *)malloc(sizeof(treenode_t *));
    newnode->elem=elem;
    newnode->left=NULL;
    newnode->right=NULL;
    newnode->color=0;
    newnode->parent=NULL;
    return newnode;
}
void insert(treenode_t **node,int elem){
    if(*node==NULL){
        *node=create_node(elem);
    }else{
        treenode_t *store_parent;
        treenode_t *ptr;
        ptr=*node;
        while(ptr!=NULL){
            store_parent=ptr;
            if(elem<ptr->elem){
                if(ptr->left==NULL){
                    ptr->left=create_node(elem);
                    (ptr->left)->parent=store_parent;
                    (ptr->left)->color=1;
                }
                ptr=ptr->left;
            }
            else if(elem>ptr->elem){
                if(ptr->right==NULL){
                ptr->right=create_node(elem);
                (ptr->right)->parent=store_parent;
                (ptr->right)->color=1;
                }
                ptr=ptr->right;
            }
        }
    }
}
void print_tree(treenode_t *node){
    if(node==NULL)
        return;
    print_tree(node->left);
    printf("%dn",node->elem);
    print_tree(node->right);
}
void main(){
    treenode_t *root=NULL;
    insert(&root,10);
    insert(&root,5);
    insert(&root,14);
    print_tree(root);
}