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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. typedef struct node
  5. { int data;
  6.   struct node * left;
  7.   struct node * right;
  8. }node;
  9.  
  10. //node * root;
  11.  
  12. node *CreateBST(node *root, int elem) 
  13. {
  14.  if (root == NULL) {
  15.   root = (node *) malloc(sizeof(node));
  16.   root->left = root->right = NULL;
  17.   root->data = elem;
  18.   return root;
  19.  } 
  20.  
  21.  else 
  22.  {
  23.   if (elem < root->data)
  24.    root->left = CreateBST(root->left, elem);
  25.   else if (elem > root->data)
  26.    root->right = CreateBST(root->right, elem);
  27.   else
  28.    printf(" Duplicate Element !! Not Allowed !!!");
  29.  
  30.   return (root);
  31.  }
  32. }
  33.  
  34. void Inorder(node *root) 
  35. {
  36.  if (root != NULL) {
  37.   Inorder(root->left);
  38.   printf(" %d ", root->data);
  39.   Inorder(root->right);
  40.  }
  41. }
  42.  
  43. int main() 
  44. {
  45. 	node * root;
  46. root=CreateBST(root, 7);root=CreateBST(root, 5);root=CreateBST(root, 9);root=CreateBST(root, 8);root=CreateBST(root, 4);root=CreateBST(root, 4);
  47.  
  48. Inorder(root);
  49.  
  50. 	return 0;
  51. }
Success #stdin #stdout 0s 2140KB
comments (?)
stdin 
Standard input is empty
stdout 
 Duplicate Element !! Not Allowed !!! 4  5  7  8  9
https://ideone.com/rtYQwE
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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