/* 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 LOOP1_HPP#define LOOP1_HPPtemplate <typename T>inline T dot_product (int dim, T* a, T* b){    T result = T();    for (int i=0; i<dim; ++i) {         result += a[i]*b[i];    }    return result;}#endif // LOOP1_HPP