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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.
#ifndef ACCUM_HPP
#define ACCUM_HPP
#include <iterator>
template <typename Iter>
typename std::iterator_traits<Iter>::value_type
accum (Iter start, Iter end)
typedef typename std::iterator_traits<Iter>::value_type VT;
VT total = VT(); // assume VT() actually creates a zero value
while (start != end) {
total += *start;
return total;
#endif // ACCUM_HPP