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C++ nes类错误“在转让中不得转换......”
原标题:C++ nested class error "cannot convert ... in assignment"

I m new to C++ and 我请我将这一错误信息带入以下类别:

class LinkedList {

    class Node *head;

    class Node {
        Student *student;
        Node *next;
        Node *prev;
    public:
        Node(Student *n_student, Node *n_next, Node *n_prev);
        ~Node();

        Student *getStudent() const;
        Node *getNext() const;
        Node *getPrev() const;
    };

public:
    LinkedList();
    ~LinkedList();
    void printList();
};

造成错误的方法:

void LinkedList::printList() {
    using namespace std;

    class Node *p_n;
    p_n = head; // ERROR!

    while (p_n) {
        cout <<  [  << (*(*p_n).getStudent()).getId() <<  ]  << endl;
        p_n = (*p_n).getNext();
    }
}

错误信息

error: cannot convert Node* to LinkedList::Node* in assignment

我先尝试把诺德投到联系人:诺德,但我却不断传递同样的信息。 I m 将其汇编成X条码,但无法确定这是否造成这一问题。

如何解决这一问题的想法?

最佳回答

修改:

class Node *head;

为此:

Node *head;

当你宣布某类人员为某类人员时,你不需要<条码><>>>。 仅指名称及其相应识别符号。 与此类似:

Node *n;
LinkedList *l;

页: 1 关键词只有在你实际宣布/确定某一类别时才使用。

问题回答

暂无回答




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