// Ex9_14.cpp : main project file.
  // Using a nested class to define a stack
  
  include <stdafx.h>
  include <Box.h>                  // For Box and Container
  include <GlassBox.h>             // For GlassBox (and Box and Container)
  include <Stack.h>                // For the stack class with nested struct Item 
  
  using namespace System;
  
  int main(array<System::String ^> ^args)
  {
    array<Box^>^ boxes = { gcnew Box(2.0, 3.0, 4.0),
                           gcnew GlassBox(2.0, 3.0, 4.0),
                           gcnew Box(4.0, 5.0, 6.0),
                           gcnew GlassBox(4.0, 5.0, 6.0)
                         };
  
    Console::WriteLine(L"The array of boxes have the following volumes:");
    for each(Box^ box in boxes)
      box->ShowVolume();           // Output the volume of a box
  
    Console::WriteLine(L"\nNow pushing the boxes on the stack...");
  
    Stack^ stack = gcnew Stack;         // Create the stack
    for each(Box^ box in boxes)
      stack->Push(box);
    
    Console::WriteLine(
                L"Popping the boxes off the stack presents them in reverse order:");
    Object^ item;
    while((item = stack->Pop()) != nullptr)
      safe_cast<Container^>(item)->ShowVolume();
  
    Console::WriteLine(L"\nNow pushing integers on to the stack:");
    for(int i = 2 ; i<=12 ; i += 2)
    { 
      Console::Write(L"{0,5}",i);
      stack->Push(i);
    }
  
    Console::WriteLine(L"\n\nPopping integers off the stack produces:");
    while((item = stack->Pop()) != nullptr)
      Console::Write(L"{0,5}",item);
  
    Console::WriteLine();
    return 0;
  }