/*----------------------------------------------------------------------------*/
/* vdemo.cpp                                                                           */
/*                                                                            */
/* Virtual base class / multiple deriviation example                          */
/* Demonstrates constructor firing pattern and order, and                     */
/* the use of the virtual keyword in derivations.                             */
/*                                                                            */
/* Change the definition of __VIRTUAL__ to "virtual" to make the derivations  */
/* virtual; leave it as-is to see what happens in multiple derivations from   */
/* the same base class.                                                       */
/*                                                                            */
/* (c) Larry Morley, 1994                                                     */
/*----------------------------------------------------------------------------*/

#define __VIRTUAL__ virtual
//#define __VIRTUAL__

#include <stdio.h>

int main(void);

/*----------------------------------------------------------------------------*/

class Account
{
   private:

      int balance;

   public:

      Account()
      {
         printf("Constructor for Account.\n");
      }

      int &Balance()
      {
         return balance;
      }
};

/*----------------------------------------------------------------------------*/

class CheckingAccount : public __VIRTUAL__ Account
{
   public:

      CheckingAccount()
      {
         printf("Constructor for Checking Account.\n");
         Balance() = 10;
      }
};

/*----------------------------------------------------------------------------*/

class SavingsAccount : public __VIRTUAL__ Account
{
   public:

      SavingsAccount()
      {
         printf("Constructor for Savings Account.\n");
         Balance() = 20;
      }
};

/*----------------------------------------------------------------------------*/

class CheckingAndSavingsAccount : public CheckingAccount, public SavingsAccount
{
   public:

      CheckingAndSavingsAccount()
      {
         printf("Constructor for CheckingAndSavings Account.\n");
      }
};

/*----------------------------------------------------------------------------*/

int main()
{
   CheckingAndSavingsAccount account;

   printf("Balance 1: %d.\n",account.SavingsAccount::Balance());
   printf("Balance 2: %d.\n",account.CheckingAccount::Balance());

   return 0;
}

/*----------------------------------------------------------------------------*/