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大家好!我正在製作我自己的鏈接列表模板,以供練習和未來使用;然而,我遇到了我的一個功能問題:函數返回節點指針
Node * LinkedList :: FindNode(int x); //是爲了遍歷列表並返回一個指向包含x的指針作爲其數據。
當試圖在我的實現文件中聲明它時,我不斷收到Node的消息未定義和不兼容錯誤。
這裏是我的頭文件:
#pragma once
using namespace std;
class LinkedList
{
private:
struct Node
{
int data;
Node* next = NULL;
Node* prev = NULL;
};
//may need to typedef struct Node Node; in some compilers
Node* head; //points to first node
Node* tail; //points to last node
int nodeCount; //counts how many nodes in the list
public:
LinkedList(); //constructor
~LinkedList(); //destructor
void AddToFront(int x); //adds node to the beginning of list
void AddToEnd(int x); //adds node to the end of the list
void AddSorted(int x); //adds node in a sorted order specified by user
void RemoveFromFront(); //remove node from front of list; removes head
void RemoveFromEnd(); //remove node from end of list; removes tail
void RemoveSorted(int x); //searches for a node with data == x and removes it from list
bool IsInList(int x); //returns true if node with (data == x) exists in list
Node* FindNode(int x); //returns pointer to node with (data == x) if it exists in list
void PrintNodes(); //traverses through all nodes and prints their data
};
如果有人能幫助我定義返回節點指針的函數,我將不勝感激!
謝謝!
如果一個公共函數應該返回一個'Node *',爲什麼Node是私人的? – 2014-09-24 08:28:29
您確定將自己的鏈接列表模板設置爲「供將來使用」是個不錯的主意嗎?你爲什麼不使用'std :: list'? – TNA 2014-09-24 08:29:38