Ошибки LNK2001

#include "stdafx.h"
#include <iostream>
#include "UniversalElCart.h"
#include "Decorator.h"
#include "UnCart.h"
#include "StrPolis.h"
#include "Passport.h"
#include "Pension.h"
#include "BankCart.h"
#include <conio.h>
 
using namespace std;
 
int _tmain(int argc, _TCHAR* argv[])
{
    UniversalElCart *universalelcart = new UnCart();
    universalelcart = new Passport(universalelcart);
    universalelcart = new Pension(universalelcart);
    universalelcart = new BankCart(universalelcart);
    universalelcart = new StrPolis(universalelcart);
    universalelcart->getDescription();
    cout <<  " rub " << universalelcart->cost()<<endl;
    _getch();
}

#pragma once
class UniversalElCart
{ public:
public:
UniversalElCart(void);
~UniversalElCart(void);
virtual void getDescription()=0;
virtual float cost()=0;
};

#pragma once
#include "UniversalElCart.h"
class Decorator :
public UniversalElCart
{
public:
virtual void getDescription()=0;
};

#pragma once
#include "universalelcart.h"
 
class UnCart :
    public UniversalElCart
{
public:
    UnCart();
    ~UnCart(void);
    float cost();
    void getDescription();
};

#include "StdAfx.h"
#include <iostream>
using namespace std;
#include "UnCart.h"
 
UnCart::UnCart()
{
}
 
UnCart::~UnCart(void)
{
}
float UnCart::cost()
{
return 1000;
}
void UnCart::getDescription()
{
cout <<  " Number_UnCart" <<endl ;
}

#pragma once
#include "decorator.h"
 
class Passport :
    public Decorator
{
    UniversalElCart *universalelcart;
public:
    Passport(UniversalElCart *universalelcart1);
    ~Passport(void);
    float cost();
    void getDescription();
};

#include "StdAfx.h"
#include "Passport.h"
#include <iostream>
#include <conio.h>
using namespace std;
 
Passport::Passport(UniversalElCart *universalelcart)
{
    this->universalelcart=universalelcart;
}
 
Passport::~Passport(void)
{
}
 
float Passport::cost()
{
return (600 + universalelcart->cost());
}
 
void Passport::getDescription()
{
universalelcart->getDescription();
cout <<  " Passport " <<endl ;
}