Write a C program to determine the number of elements (or size) in a tree.




Write a C program to determine the number of elements (or size) in a tree


int tree_size(struct node* node) 
{ 
  if (node==NULL) 
  { 
    return(0); 
  } 
  else 
  { 
    return(tree_size(node->left) + tree_size(node->right) + 1); 
  } 
}