链接器错误LNK2001 [英] Linker error LNK2001
问题描述
当我尝试创建一个对象时,我在Visual Studio中得到一个LNK2001错误,这是一个问题,我认为,因为更改构造函数会改变错误。
When I try to create an object I get a LNK2001 error in Visual Studio, it's a problem with the constructor I think since changing the constructor changes the error.
Customer bob("Bob", "25 Bob Lane", "01bob82", "M", "bob/bob/bob");
此行显示此错误:
Error 1 error LNK2001: unresolved external symbol "public: __thiscall
Customer::Customer(class std::basic_string<char,struct std::char_traits<char>,class
std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>,class
std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>,class
std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>,class
std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>,class
std::allocator<char> >)" (??0Customer@@QAE@V?$basic_string@DU?$char_traits@D@std@@V?
$allocator@D@2@@std@@0000@Z) D:\Dropbox\Work\C++\C++ Assignment\C++
Assignment\driver.obj
包含构造函数的Customer类:
Customer class that contains the constructor:
#pragma once
#include "l_list.h"
#include "Account.h"
#include <string>
using namespace std;
class Customer
{
private:
l_list<Account> accounts;
string name;
string address;
string telNo;
string sex;
string dob;
public:
Customer(string name, string address, string telNo, string sex, string dob)
{
Customer::name = name;
Customer::address = address;
Customer::telNo = telNo;
Customer::sex = sex;
Customer::dob = dob;
}
void createAccount()
{
cout << "What type of account?";
}
};
推荐答案
如果你有链接错误,
您应该检查(或添加)是使用Customer类的项目的Dependencies属性中的路径。在VS中,您可以找到它项目属性 - >配置属性 - >链接器 - >输入 - >附加依赖关系。似乎链接器无法找到具有Customer实现的外部库。你可以成功地编译你的项目,因为所有的#include都是正确的,但是你在连接的阶段失败只是因为依赖。
What you should check(or add) is path in Dependencies property of the project that uses Customer class. In VS you can find it "Project Properties->Configuration Properties->Linker->Input->Additional Dependencies". Seems that linker can't find the external library with Customer implementation. You can successfully compile your project cause all #include are correct but you fail on the stage of linking just because of dependencies.
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