/* 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 <string>// note: reference parameterstemplate <typename T>inline T const& max (T const& a, T const& b){    return  a < b  ?  b : a;}int main(){    std::string s;    ::max("apple","peach");   // OK: same type    ::max("apple","tomato");  // ERROR: different types    ::max("apple",s);         // ERROR: different types}