/*
 * This example is from the Tools.h++ manual, version 7
 *
 * Copyright (c) 1989-1999 Rogue Wave Software, Inc.  All Rights Reserved.
 *
 * This computer software is owned by Rogue Wave Software, Inc. and is
 * protected by U.S. copyright laws and other laws and by international
 * treaties.  This computer software is furnished by Rogue Wave Software,
 * Inc. pursuant to a written license agreement and may be used, copied,
 * transmitted, and stored only in accordance with the terms of such
 * license and with the inclusion of the above copyright notice.  This
 * computer software or any other copies thereof may not be provided or
 * otherwise made available to any other person.
 *
 * U.S. Government Restricted Rights.  This computer software is provided
 * with Restricted Rights.  Use, duplication, or disclosure by the
 * Government is subject to restrictions as set forth in subparagraph (c)
 * (1) (ii) of The Rights in Technical Data and Computer Software clause
 * at DFARS 252.227-7013 or subparagraphs (c) (1) and (2) of the
 * Commercial Computer Software – Restricted Rights at 48 CFR 52.227-19,
 * as applicable.  Manufacturer is Rogue Wave Software, Inc., 5500
 * Flatiron Parkway, Boulder, Colorado 80301 USA.
 */
#include <rw/cstring.h>
#include <iostream.h>

RWCString g;	// Global object

void setGlobal(RWCString x) { g = x; }

main(){
  RWCString a("kernel");	// 1
  RWCString b(a);	// 2
  RWCString c(a);	// 3

  setGlobal(a);	// Still only one copy of "kernel"!	// 4

  cout << "Before copy on write: " << endl;
  cout << "Strings:\t" << a << "\t" << b << "\t"
                       << c << "\t" << g << endl ;

  cout << "Addresses:\t" << (void *)a.data() << "\t"
                         << (void *)b.data() << "\t"
                         << (void *)c.data() << "\t"
                         << (void *)g.data() << endl;

  b += "s";	// Now b has its own data: "kernels"	// 5

  cout << endl << "After copy on write: " << endl;
  cout << "Strings:\t" << a << "\t" << b << "\t"
                       << c << "\t" << g << endl ;

  cout << "Addresses:\t" << (void *)a.data() << "\t"
                         << (void *)b.data() << "\t"
                         << (void *)c.data() << "\t"
                         << (void *)g.data() << endl;

  return 0;
}