#ifndef __STACK_H
#define __STACK_H

#include <stdlib.h>

struct stackItem
{
   stackItem* next;
   int value;
};

typedef stackItem* stackPtr;

class Stack
{
 private:
   stackPtr s;

 public:
   Stack() : s(NULL) {}
   ~Stack();
   Stack(const Stack& oldStack);   // copy constructor
   int StackIsEmpty(void);
   void Push(int newItem, int& success);
   void Pop(int& success);
   void GetStackTop(int& stackTop, int& success);
};

#endif