How to operate the push and print a Stack with fixes?

It turns out that I want to make batteries with fixes, and I want to run the push and print, but I print it with errors.

What corrections can I make? if possible, pop also want to do it, but I have no idea how to do it.

Code:

#pragma once
#define LongitudMaxima 6
class Pilas
{
private:
    int nValor,Tope, nPila[LongitudMaxima];
public:
    Pilas();
    ~Pilas();
    bool EstaVacia();
    bool EstaLlena();
    bool push(int nValor);
    void imprimir();
};

#include "stdafx.h"
#include "Pilas.h"


Pilas::Pilas()
{
    Tope = -1;
    for (int nIndex = 0; nIndex < 6; nIndex++)
    {
        nPila[nIndex] = 0;
    }
}


Pilas::~Pilas()
{
}

bool Pilas::EstaVacia()
{
    return Tope == -1;
}

bool Pilas::EstaLlena()
{
    return Tope = nPila[LongitudMaxima];
}

bool Pilas::push(int nValor)
{
    bool bAllOk = false;
    if (!EstaLlena())
    {
        if (EstaVacia())
        {
            return true;
            Tope = 0;
            nPila[0] = nValor;

        }
        else
        {
            for (int nIndex = 1; nIndex < LongitudMaxima; nIndex++)
            {
                cout << "LA PILA ESTA LLENA..." << endl;
            }

        }
    }
}

void Pilas::imprimir()
{
        cout << "LA PILA es: " << push(nValor)<< endl;
}

#include "stdafx.h"


int main()
{
    Pilas A;
    A.imprimir();
    system("pause");
    return 0;
}