#include "stack.hpp"

STACK::STACK()
{
  Head = NULL;
}

STACK::~STACK()
{
  int value;

  while (!Is_Empty())
  {
    Pop(value);
  }
}

int STACK::Is_Empty()
{
  return Head == NULL;
}

void STACK::Push(int value)
{
  NODE * temp = new NODE;
  temp->value = value;
  temp->link = Head;
  Head = temp;
}

void STACK::Pop(int &value)
{
  NODE * temp = Head;
  value = Head->value;
  Head = Head->link;
  delete temp;
}