How are all leaves of a binary search tree printed in C++

C++
🤖 Code Explanation
void printBoundaryLeft(struct node* root) {
if (root == NULL) return;
if (root->left) {
cout << root->data << " ";
printBoundaryLeft(root->left);
}
else if (root->right) {
cout << root->data << " ";
printBoundaryLeft(root->right);
}
}
void printBoundaryRight(struct node* root) {
if (root == NULL) return;
if (root->right) {
printBoundaryRight(root->right);
cout << root->data << " ";
}
else if (root->left) {
printBoundaryRight(root->left);
cout << root->data << " ";
}
}
void printBoundary(struct node* root

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