24.2 StackPushPop.cpp~

#include <stack>
#include <iostream>
#include <algorithm>
using namespace std;    

template <typename T>
void DisplayContents(const T& Input)
{
   for_each( Input.cbegin() // auto, cbegin: c++11 
      , Input.cend()  // cend() is new in C++11 
     , [](const T::value_type& element) { cout << element << ' ';});

   cout << "| Number of elements: " << Input.size() << endl;
}

int main()
{
    stack<int> stackInts;

    stackInts.push(25);
    stackInts.push(10);
    stackInts.push(-1);
    stackInts.push(5);

    cout << "Elements in stack are: " << endl;
	DisplayContents(stackInts._Get_container());

    // pop = remove the topmost element
    cout << endl << "Popping them one after another..." << endl;

    while(stackInts.size() != 0)
    {
        cout << "The element at the top is: " << stackInts.top();
        cout << endl <<  "Removing it from the stack!" << endl;

        // Remove the topmost element
        stackInts.pop();
    }

    if(stackInts.empty())
        cout << endl << "The stack is now empty!";

    return 0;
}