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/* The following code example is taken from the book
* "C++ Templates - The Complete Guide"
* by David Vandevoorde and Nicolai M. Josuttis, Addison-Wesley, 2002
* (C) Copyright David Vandevoorde and Nicolai M. Josuttis 2002.
* Permission to copy, use, modify, sell and distribute this software
* is granted provided this copyright notice appears in all copies.
* This software is provided "as is" without express or implied
* warranty, and with no claim as to its suitability for any purpose.
#include "accum6.hpp"
#include <iostream>
class MultPolicy {
template<typename T1, typename T2>
static void accumulate (T1& total, T2 const& value) {
total *= value;
int main()
// create array of 5 integer values
int num[] = { 1, 2, 3, 4, 5 };
// print product of all values
std::cout << "the product of the integer values is "
<< Accum<int,MultPolicy>::accum(&num[0], &num[5])
<< '\n';
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