92 lines
3.4 KiB
C++
92 lines
3.4 KiB
C++
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#include "stlexam.h"
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#pragma hdrstop
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/**************************************************************************
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*
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* inr_prod.cpp - Example program computes the inner product A X B of two
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* ranges A and B. See Class Reference Section
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*
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***************************************************************************
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*
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* (c) Copyright 1994, 1998 Rogue Wave Software, Inc.
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* ALL RIGHTS RESERVED
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*
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* The software and information contained herein are proprietary to, and
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* comprise valuable trade secrets of, Rogue Wave Software, Inc., which
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* intends to preserve as trade secrets such software and information.
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* This software is furnished pursuant to a written license agreement and
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* may be used, copied, transmitted, and stored only in accordance with
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* the terms of such license and with the inclusion of the above copyright
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* notice. This software and information or any other copies thereof may
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* not be provided or otherwise made available to any other person.
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*
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* Notwithstanding any other lease or license that may pertain to, or
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* accompany the delivery of, this computer software and information, the
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* rights of the Government regarding its use, reproduction and disclosure
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* are as set forth in Section 52.227-19 of the FARS Computer
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* Software-Restricted Rights clause.
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*
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* Use, duplication, or disclosure by the Government is subject to
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* restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in
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* Technical Data and Computer Software clause at DFARS 252.227-7013.
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* Contractor/Manufacturer is Rogue Wave Software, Inc.,
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* P.O. Box 2328, Corvallis, Oregon 97339.
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*
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* This computer software and information is distributed with "restricted
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* rights." Use, duplication or disclosure is subject to restrictions as
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* set forth in NASA FAR SUP 18-52.227-79 (April 1985) "Commercial
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* Computer Software-Restricted Rights (April 1985)." If the Clause at
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* 18-52.227-74 "Rights in Data General" is specified in the contract,
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* then the "Alternate III" clause applies.
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*
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**************************************************************************/
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#include <numeric> // For inner_product.
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#include <list> // For list.
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#include <vector> // For vectors.
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#include <functional> // For plus and minus.
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#ifdef _RW_STD_IOSTREAM
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#include <iostream>
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#else
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#include <iostream.h>
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#endif
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int main ()
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{
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#ifndef _RWSTD_NO_NAMESPACE
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using namespace std;
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#endif
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//
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// Initialize a list and an int using arrays of ints.
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//
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int a1[3] = {6, -3, -2};
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int a2[3] = {-2, -3, -2};
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list<int,allocator<int> > l(a1+0, a1+3);
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vector<int,allocator<int> > v(a2+0, a2+3);
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//
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// Calculate the inner product of the two sets of values.
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//
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int inner_prod = inner_product(l.begin(), l.end(), v.begin(), 0);
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//
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// Calculate a wacky inner product using the same values.
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//
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int wacky = inner_product(l.begin(), l.end(), v.begin(), 0,
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plus<int>(), minus<int>());
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//
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// Print the output.
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//
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cout << "For the two sets of numbers: " << endl << " ";
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copy(v.begin(),v.end(),
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ostream_iterator<int,char,char_traits<char> >(cout," "));
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cout << endl << " and ";
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copy(l.begin(),l.end(),
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ostream_iterator<int,char,char_traits<char> >(cout," "));
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cout << "," << endl << endl;
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cout << "The inner product is: " << inner_prod << endl;
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cout << "The wacky result is: " << wacky << endl;
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return 0;
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}
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