#ifndef STACK_VE_H
#define STACK_VE_H

#include "stack.h"

class StackVE : public Stack {
friend class StackVEIterator;

private:
 // Private data           
 int  topIndex_;                
 int* data_;                                   
 int  size_;
 
public:
  // Construtor           
  StackVE(int size=2);      

  // Destrutor           
  virtual ~StackVE();   

  // Stack Methods 
  bool isEmpty() { return (topIndex_< 0); }       
  bool isFull()  { return (topIndex_== size_-1); }       
  void push(int n);     
  int  pop();  
  int  top();

  // Iterator methods
  StackIterator *iterator();
};
#endif