createanddestroy.cpp

C程序设计经典教程第5版程序示例,比较适合初级c语言的学生

// Fig. 20.12: CreateAndDestroy.cpp
// Member-function definitions for class CreateAndDestroy.
#include <iostream>
using std::cout;
using std::endl;

#include "CreateAndDestroy.h" // include CreateAndDestroy class definition

// 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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