text: // Fig. 17.12: CreateAndDestroy.cpp
  // CreateAndDestroy class member-function definitions.
  #include <iostream>
  #include "CreateAndDestroy.h" // include CreateAndDestroy class definition
  using namespace std;
  
  // constructor
  CreateAndDestroy::CreateAndDestroy( int ID, string messageString )
  {
     objectID = ID; // set object's ID number
     message = messageString; // set object's descriptive message
  
     cout << "Object " << objectID << "   constructor runs   " 
        << message << endl;
  } // end CreateAndDestroy constructor
  
  // destructor
  CreateAndDestroy::~CreateAndDestroy()
  { 
     // output newline for certain objects; helps readability
     cout << ( objectID == 1 || objectID == 6 ? "\n" : "" );
  
     cout << "Object " << objectID << "   destructor runs    " 
        << message << endl; 
  } // end ~CreateAndDestroy destructor
  
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