fig06_17.cpp

《c＋＋大学教程》源码

// Fig. 6.17: fig06_17.cpp
// Demonstrating the order in which constructors and
// destructors are called.
#include <iostream>

using std::cout;
using std::endl;

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

void create( void );   // prototype

// global object
CreateAndDestroy first( 1, "(global before main)" );

int main()
{
   cout << "\nMAIN FUNCTION: EXECUTION BEGINS" << endl;

   CreateAndDestroy second( 2, "(local automatic in main)" );

   static CreateAndDestroy third( 
      3, "(local static in main)" );
   
   create();  // call function to create objects

   cout << "\nMAIN FUNCTION: EXECUTION RESUMES" << endl;

   CreateAndDestroy fourth( 4, "(local automatic in main)" );
   
   cout << "\nMAIN FUNCTION: EXECUTION ENDS" << endl;

   return 0;

} // end main

// function to create objects
void create( void )
{
   cout << "\nCREATE FUNCTION: EXECUTION BEGINS" << endl;

   CreateAndDestroy fifth( 5, "(local automatic in create)" );

   static CreateAndDestroy sixth( 
      6, "(local static in create)" );

   CreateAndDestroy seventh( 
      7, "(local automatic in create)" );

   cout << "\nCREATE FUNCTION: EXECUTION ENDS" << endl;

} // end function create

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