/* 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. */// maximum of two int valuesinline int const& max (int const& a, int const& b) {    return  a < b ? b : a;}// maximum of two values of any typetemplate <typename T>inline T const& max (T const& a, T const& b){    return  a < b ? b : a;}// maximum of three values of any typetemplate <typename T>inline T const& max (T const& a, T const& b, T const& c){    return max (max(a,b), c);}int main(){    ::max(7, 42, 68);     // calls the template for three arguments    ::max(7.0, 42.0);     // calls max<double> (by argument deduction)    ::max('a', 'b');      // calls max<char> (by argument deduction)    ::max(7, 42);         // calls the nontemplate for two ints    ::max<>(7, 42);       // calls max<int> (by argument deduction)    ::max<double>(7, 42); // calls max<double> (no argument deduction)    ::max('a', 42.7);     // calls the nontemplate for two ints}