C++ class and inheritance error: undefined reference to derived class

I am attempting to make part of a program that uses a bank account class as the base class and checking and savings as the derived classes. I have been trying to set up the basic framework before I do any fancy data handling and I've followed some tutorials to get a better understanding of classes and inheritance.

I have looked for answers but the answers I have found don't seem to be my problem but I might just need another set of eyes on my code.

the compiler errors:

In function main': badriver.cpp:20: undefined reference toChecking::getAccount()' badriver.cpp:23: undefined reference to Checking::setAccount(int)' badriver.cpp:24: undefined reference toSavings::setAccount(int)' badriver.cpp:26: undefined reference to `Checking::getAccount()'

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;
    }

BankAccount.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

BankAccount.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;
}

Checking.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

Checking.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;
}   

Savings.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

Savings.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;
}   

Thanks for any help pointing me in the right direction.