我试图通过使用唯一指针来创建一个链接列表。但是,由于一些我不知道如何修复的奇怪错误,我的程序无法编译。有人可以帮我解决这个问题吗?谢谢你。
联系人列表.h
#pragma once
#include"Contact.h"
#include<memory>
using namespace std;
class ContactList
{
public:
ContactList();
~ContactList();
void addToHead(const std::string&);
void PrintList();
private:
//Contact* head;
unique_ptr<Contact> head;
int size;
};
联系人列表.cpp
#include"ContactList.h"
#include<memory>
using namespace std;
ContactList::ContactList(): head(new Contact()), size(0)
{
}
void ContactList::addToHead(const string& name)
{
//Contact* newOne = new Contact(name);
unique_ptr<Contact> newOne(new Contact(name));
if(head == 0)
{
head.swap(newOne);
//head = move(newOne);
}
else
{
newOne->next.swap(head);
head.swap(newOne);
//newOne->next = move(head);
//head = move(newOne);
}
size++;
}
void ContactList::PrintList()
{
//Contact* tp = head;
unique_ptr<Contact> tp(new Contact());
tp.swap(head);
//tp = move(head);
while(tp != 0)
{
cout << *tp << endl;
tp.swap(tp->next);
//tp = move(tp->next);
}
}
这些是我遇到的错误:
Error 1 error LNK2019: unresolved external symbol "public: __thiscall ContactList::~ContactList(void)" (??1ContactList@@QAE@XZ) referenced in function "public: void * __thiscall ContactList::`scalar deleting destructor'(unsigned int)" (??_GContactList@@QAEPAXI@Z) E:\Fall 2013\CPSC 131\Practice\Practice\Practice\ContactListApp.obj
Error 2 error LNK1120: 1 unresolved externals E:\Fall 2013\CPSC 131\Practice\Practice\Debug\Practice.exe 1