#ifndef _CASH_H_

#define _CASH_H_



#include <iostream>



using std::ostream;



// The Cash class represents money owned by the investor.

class Cash {

 public:

  // Construct a cash investment of a given amount.

 Cash(double amount) : amount_(amount) { }



  // Cash's accessor methods.

  void   set_amount(double amount);

  double get_amount() const;



  // Cash's "investment" interface.

  double GetMarketValue() const;

  double GetProfit() const;

  double GetCost() const;



  // Overload (ostream& <<) so we can print Cash.

  friend ostream &operator<<(ostream &out, const Cash &rhs);



 private:

  double amount_;   // amount of money owned

};



#endif  // _CASH_H_