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结构与阶级之间的差异,以及为双链接名单构建一个节点?
原标题:Differences between struct and class and constructing a node for double linked lists?

我试图为学习经验创建自己的双链接列表。 我的书展示了下面的节点结构, 我在想这是否等同于我创建的节点类? 在结构中,这个函数仅仅是一种给结构中的每个数据类型分配值的构建器吗?

//===== Struct =====

struct Node
{
    Node *next;
    Node *prev;
    std::string val;
    Node(const std::string &value, Node *nextVal = NULL, Node *prevVal = NULL) :
        val(value), next(nextVal), prev(prevVal) {}
};

//===== Class ====
class Node
{
public:
    Node(std::string value = "", Node *pVal = NULL, Node *nVal = NULL);
    virtual ~Node(void);

protected:
    Node *next;
    Node *prev;
    std::string val;
};

Node(std::string value = "", Node *pVal = NULL, Node *nVal = NULL)
{
    next = nVal;
    prev = pVal;
    val = value;
}
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