10. Inheritance example

Base class:

class Account {
public:
    Account();
    bool sell( string symbol, int shares );
    bool buy( string symbol, int shares );
    bool deposit( double amount );
    bool withdraw( double amount );

private:
    double m_cash_balance;
    static const int SIZE = 100;
    string m_holding_symbols[ SIZE ];
    int m_holding_shares[ SIZE ];

};//class Account

Derived class:

class GoldAccount : public Account {
public:
    GoldAccount();
    virtual ~GoldAccount();
    bool credit_interest();

private:
    int m_margin_balance;
    std::string m_person_name;

};// class GoldAccount