Binary Tree #18

#include <stdio.h>
#include <stdlib.h>

struct TreeNode
{
  int data;
  struct TreeNode* left;
  struct TreeNode* right;
};

int main()
{
  struct TreeNode* root = (struct TreeNode*)malloc(sizeof(struct TreeNode));
  root->data = 1;
  root->left = (struct TreeNode*)malloc(sizeof(struct TreeNode));
  root->left->data = 2;
  root->right = (struct TreeNode*)malloc(sizeof(struct TreeNode));
  root->right->data = 3;

  return 0;
}