#include <iostream>
#include "Stack.h"
using namespace std;
#define MAXSTACK 50
int nHead = 0; // stos jest początkowo pusty
char Stack[MAXSTACK] = { 0 };
// =========================================
void push(char c)
{
	if (nHead < MAXSTACK)
	{
		Stack[nHead] = c;
		nHead++;
	}
	else
		cout << "BLAD!! Stos jest pelny!!\n";
}

// =========================================
char pop()
{
	char c = top();
	if (c)
	{
		del();
	}
	else
		cout << "BLAD!! Stos jest pusty!!\n";
	return c;
}

// =========================================
char top()
{
	if (IsEmpty() == 1)
	{

		cout << " ERROR! Stos jest pusty!! \n";
		return 0;
	}
	else
	{

		return Stack[nHead];
		nHead--;
	}
}

// =========================================
void del()
{
	if ( IsEmpty() == 1 )
	{
		cout << " ERROR! Stos jest pusty!! \n";
	}
	else
	{
		Stack[nHead] = NULL;
		nHead--;
	}

}

// =========================================
int IsEmpty()
{
	if (nHead == 0) return 1;
	else return 0;
}