问访问c++中的重载运算符

EN

Node* List::operator [](int index) const{
    Node* p = head_;

    for (int i = 0; i < index; i++){
            p = p->link();
    }

    return p;
}

if ((n = index_of_name(artistName)) >= 0){
  Node* p = // code needed here
}