У меня есть файл .h со следующим:
#ifndef CS240_LINKED_LIST_H
#define CS240_LINKED_LIST_H
#include <string>
//! LLNode implements a doubly-linked list node
class LLNode {
friend class LinkedList;
public:
LLNode(const std::string & v, LLNode * p, LLNode * n) :
value(v), prev(p), next(n)
{
}
private:
std::string value; //!< value stored in the node
LLNode * prev; //!< pointer to previous node in the list
LLNode * next; //!< pointer to next node in the list
};
//! LinkedList implements a doubly-linked list
class LinkedList
{
public:
//! No-arg constructor. Initializes an empty linked list
LinkedList();
//! Copy constructor. Makes a complete copy of its argument
LinkedList(const LinkedList & other);
private:
//! two dummy nodes to keep track of the beginning and end of the list.
LLnode beginning;
LLnode end;
int size;
};
#endif
В файле cpp у меня есть:
#include "LinkedList.h"
LinkedList::LinkedList(){
this->beginning.prev = NULL;
this->beginning.next = this->end;
this->end.prev = this->beginning;
this->end.next = NULL;
}
Вот вывод:
>g++ -o LinkedList.o LinkedList.cpp
In file included from LinkedList.cpp:1:
LinkedList.h:37: error: 'LLnode' does not name a type
LinkedList.h:38: error: 'LLnode' does not name a type
LinkedList.cpp: In constructor 'LinkedList::LinkedList()':
LinkedList.cpp:4: error: 'class LinkedList' has no member named 'beginning'
LinkedList.cpp:5: error: 'class LinkedList' has no member named 'beginning'
LinkedList.cpp:5: error: 'class LinkedList' has no member named 'end'
LinkedList.cpp:6: error: 'class LinkedList' has no member named 'end'
LinkedList.cpp:6: error: 'class LinkedList' has no member named 'beginning'
LinkedList.cpp:7: error: 'class LinkedList' has no member named 'end'
Я не знаю, как это исправить. Как еще я бы установил начальный и конечный объекты? Просто чтобы вы знали, что я программист на Java, изучаю C ++.