adj_diff.cpp

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 #include "stlexam.h"
 #pragma hdrstop
 /**************************************************************************
 *
 * adj_diff.cpp - Example program for adjacent_difference. 
 *                See Class Reference Section
 *
 ***************************************************************************
 *
 * (c) Copyright 1994, 1998 Rogue Wave Software, Inc.
 * ALL RIGHTS RESERVED
 *
 * The software and information contained herein are proprietary to, and
 * comprise valuable trade secrets of, Rogue Wave Software, Inc., which
 * intends to preserve as trade secrets such software and information.
 * This software is furnished 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 software and information or any other copies thereof may
 * not be provided or otherwise made available to any other person.
 *
 * Notwithstanding any other lease or license that may pertain to, or
 * accompany the delivery of, this computer software and information, the
 * rights of the Government regarding its use, reproduction and disclosure
 * are as set forth in Section 52.227-19 of the FARS Computer
 * Software-Restricted Rights clause.
 * 
 * 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.
 * Contractor/Manufacturer is Rogue Wave Software, Inc.,
 * P.O. Box 2328, Corvallis, Oregon 97339.
 *
 * This computer software and information is distributed with "restricted
 * rights."  Use, duplication or disclosure is subject to restrictions as
 * set forth in NASA FAR SUP 18-52.227-79 (April 1985) "Commercial
 * Computer Software-Restricted Rights (April 1985)."  If the Clause at
 * 18-52.227-74 "Rights in Data General" is specified in the contract,
 * then the "Alternate III" clause applies.
 *
 **************************************************************************/

#include <numeric>       // For adjacent_difference.
#include <vector>        // For vector.
#include <functional>    // For multiplies.

#ifdef _RW_STD_IOSTREAM
#include <iostream>
#else
#include <iostream.h>
#endif     

int main ()
{
#ifndef _RWSTD_NO_NAMESPACE
   using namespace std;
#endif
   //
   // Initialize a vector of ints from an array.
   //
   int arr[10] = {1,1,2,3,5,8,13,21,34,55};
   vector<int,allocator<int> > v(arr+0, arr+10);
   //
   // Two uninitialized vectors for storing results.
   //
   vector<int,allocator<int> > diffs(10), prods(10);
   //
   // Calculate difference(s) using default operator (minus).
   //
   adjacent_difference(v.begin(),v.end(),diffs.begin());
   // 
   // Calculate difference(s) using the times operator.
   //
   adjacent_difference(v.begin(), v.end(), prods.begin(), multiplies<int>());
   //
   // Output the results.
   //
   cout << "For the vector: " << endl << "     ";
   copy(v.begin(),v.end(),ostream_iterator<int,char,char_traits<char> >(cout," "));
   cout << endl << endl;

   cout << "The differences between adjacent elements are: " << endl << "    ";
   copy(diffs.begin(),diffs.end(), ostream_iterator<int,char,char_traits<char> >(cout," "));
   cout << endl << endl;

   cout << "The products of adjacent elements are: " << endl << "     ";
   copy(prods.begin(),prods.end(), ostream_iterator<int,char,char_traits<char> >(cout," "));
   cout << endl;

   return 0;
}