我已经为此工作了一段时间，但我似乎无法弄清楚。我无法编译代码，因为它不断抛出以下错误。基本上我想要做的是创建一个向量，其中包含使用指针来自基类和派生类的对象。
Final Assignment.obj：错误 LNK2019：未解析的外部符号“public：__thiscall Product::Product(void)”(??0Product@@QAE@XZ) 在函数“public: __thiscall SaleProduct::SaleProduct(char,class std: :basic_string,class std::allocator >,int,double,double)" (??0SaleProduct@@QAE@DV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@ std@@HNN@Z)
致命错误 LNK1120: 1 未解决的外部
#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <iomanip>
#include <vector>
#include <string>
using namespace std;
class Product
{
public:
Product();
Product(char iT,string des,int inv,double p,double dis)
{
invType = iT;
description = des;
inventory = inv;
price = p;
discount = dis;
}
char getInvType(){
return invType;
}
protected:
char invType ;
string description;
int inventory;
double price;
double discount;
};
class SaleProduct:public Product {
public:
//SaleProduct();
SaleProduct(char iT,string des,int inv,double p,double dis){
}
};
int main()
{
int choice = 0;
// SaleProduct* SaleProductOB;
// Product *productPoint = &ProductOB;
vector<Product*> inventoryVec;
char invType;
string description;
int inventory;
double price;
double discount = 0;
ifstream inFile("Inventory.txt");
if (inFile.is_open()){
while (inFile >> invType >> description >> inventory >> price >>discount){
if (invType == 'S'){
inventoryVec.push_back(new SaleProduct(invType,description,inventory,price,discount) );
}else{
//inventoryVec.push_back(new Product(invType,description,inventory,price,discount) );
}
}
}else{
cout << "File is not ready!";
}
cout << inventoryVec.size() << endl;
while (choice != 3) {
cout << "Please enter your choice:" << endl;
cout << "1. Print available items" << endl;
cout << "2. Add item to cart" << endl;
cout << "3. Print receipt and quit" << endl << endl;
cin >> choice;
}
//system("PAUSE");
return 0;
}