/* 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 "accum8.hpp"#include <iostream>template<typename T1, typename T2>class MultPolicy {  public:    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 average value    std::cout << "the average value of the integer values is "              << Accum<int>::accum(&num[0], &num[5]) / 5              << '\n';    // print product of all values    std::cout << "the product of the integer values is "              << Accum<int,MultPolicy>::accum(&num[0], &num[5])              << '\n';    // create array of character values    char name[] = "templates";    int length = sizeof(name)-1;    // (try to) print average character value    std::cout << "the average value of the characters in \""              << name << "\" is "              << Accum<char>::accum(&name[0], &name[length]) / length              << '\n';}