// File: dmc2.h
//
// A Dynamic Memory Class (DMC)
// This time with copy constructor and
// overloaded assignment operator.

#include <iostream>
using namespace std ;

class DMC {

friend ostream& operator<< (ostream& os, const DMC& X) ;

public:
   DMC() ;              // default constructor
   DMC(const DMC& Y) ;  // copy constructor
   ~DMC() ;             // destructor

   DMC& operator=(const DMC& Y) ;  // assignment

   void Set(int n) ;

private:
   static int count ;
   int number ;
   int *ptr ;
} ;

const DMC operator+(const DMC& X, const DMC& Y) ;
ostream& operator<< (ostream& os, const DMC& X) ;