C++类和继承错误:未定义对派生类的引用

我正在尝试制作一个程序的一部分,该程序使用银行帐户类作为基类,使用支票和储蓄作为派生类。在我进行任何花式数据处理之前,我一直在尝试建立基本框架,并遵循了一些教程来更好地理解类和继承。

我一直在寻找答案,但我找到的答案似乎不是我的问题,但我可能只需要重新审视我的代码。

编译器错误:

在函数中 main': badriver.cpp:20: undefined reference to 正在检查::getAccount()' badriver.cpp:23:未定义的引用 Checking::setAccount(int)' badriver.cpp:24: undefined reference to 储蓄::setAccount(int)' badriver.cpp:26:对“Checking::getAccount()”的未定义引用

badriver.cpp

#include "BankAccount.cpp"
#include "Checking.cpp"
#include "Savings.cpp"
#include <string>
#include <iostream>
using namespace std;

int main(){

   Checking c;
   Savings s;

   cout << "Checking: " << c.getAccount() << " - Type: " << c.getType() << endl;
   cout << "Savings: " << s.getAccount() << " - Type: " << s.getType() << endl;

   c.setAccount(9);
   s.setAccount(15);

   cout << "New Checking: " << c.getAccount() << endl;
   cout << "New Savings: " << s.getAccount() << endl;
       return 0;
    }

银行账户.h

#ifndef BANKACCOUNT_H
#define BANKACCOUNT_H
#include <string>
using std::string;
using std::ostream;
using std::istream;

class BankAccount{

private:
   int myAccount;

   const char* color;

public:
   // default constructor
   BankAccount();
   BankAccount(int account);
   virtual ~BankAccount();

   virtual void setAccount(int)=0;
   int getAccount();
//    
//    void setSAccount(int);
//    int getSAccount();
//    
   virtual const char* getColor();                                            
   virtual const char* getType() = 0; 
   //virtual const char* getCType() = 0; 

protected:
   void setColor(const char*);   

};

#endif // BANKACCOUNT_H

银行账户.cpp

#include "BankAccount.h"
#include "Checking.h"
#include "Savings.h"
#include <string>
#include <iostream>
#include <cstdlib>
using namespace std;

// default constructor
BankAccount::BankAccount(){
   account = 1;
}

BankAccount::~BankAccount(){}

// void BankAccount::setAccount(int account){
//    myAccount  = account;
// }

int BankAccount::getAccount(){
   return myAccount ;
}

BankAccount::BankAccount(int account){
   myAccount = account;
}

const char* BankAccount::getColor(){
   return color;
}

void BankAccount::setColor(const char* c){
   color = c;
}

正在检查.h

#ifndef CHECKING_H
#define CHECKING_H
#include "BankAccount.h"
#include <string>
using std::string;
using std::ostream;
using std::istream;

class Checking : public BankAccount{

private:
   const char* type;

public:
   Checking();
   virtual ~Checking();
   void setAccount(int account);


   virtual const char* getType();

   void setChecking(int);
   int getChecking();
};

#endif //CHECKING_H

检查.cpp

#include "Checking.h"
#include <string>
#include <string>
#include <iostream>
#include <cstdlib>
using namespace std;

Checking::Checking() : BankAccount(1), type("Checking"){}

Checking::~Checking(){}

BankAccount::~BankAccount(){}

void BankAccount::setAccount(int account){
   myAccount  = account;
}


const char* Checking::getType(){
   return type;
}   

储蓄.h

#ifndef  SAVINGS_H
#define SAVINGS_H
#include "BankAccount.h"
#include <string>
using std::string;
using std::ostream;
using std::istream;

class Savings: public BankAccount{

private:
   const char* type;

public:
   Savings();
   virtual ~Savings();
   void setAccount(int account);

   virtual const char* getType();

   void setSavings(int);
   int getSavings();
};

#endif // SAVINGS_H

节省.cpp

#include "Savings.h"
#include <string>
#include <string>
#include <iostream>
#include <cstdlib>
using namespace std;

Savings::Savings() : BankAccount(2), type("Savings"){}

Savings::~Savings(){}

BankAccount::~BankAccount(){}

void BankAccount::setAccount(int account){
   myAccount  = account;
}

const char* Savings::getType(){
   return type;
}   

谢谢你帮我指明正确的方向。