c++在通知父级的同时删除树结构中的所有子级

struct TreeNode {
    int value;
    vector<TreeNode*> children;
};

void deleteSubtree(TreeNode* node) {
    if (node == nullptr) {
        return;
    }
    
    for (TreeNode* child : node->children) {
        deleteSubtree(child);
    }
    
    delete node;
}

void notifyAndDelete(TreeNode* node) {
    if (node == nullptr) {
        return;
    }
    
    // 通知父级节点的操作
    
    deleteSubtree(node);
}