/* 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 <iostream>#include <string>#include <cstdlib>#include <vector>#include "stack6.hpp"int main(){    try {        Stack<int>   intStack;       // stack of ints        Stack<float> floatStack;     // stack of floats        // manipulate int stack        intStack.push(42);        intStack.push(7);        // manipulate float stack        floatStack.push(7.7);        // assign stacks of different type        floatStack = intStack;        // print float stack        std::cout << floatStack.top() << std::endl;        floatStack.pop();        std::cout << floatStack.top() << std::endl;        floatStack.pop();        std::cout << floatStack.top() << std::endl;        floatStack.pop();    }    catch (std::exception const& ex) {        std::cerr << "Exception: " << ex.what() << std::endl;    }    // stack for ints using a vector as an internal container    Stack<int,std::vector<int> > vStack;    //...    vStack.push(42);    vStack.push(7);    std::cout << vStack.top() << std::endl;    vStack.pop();}