// Window.h
#pragma once
#include <iostream>
class Window {
public:
    char title[30];
    bool state;
    virtual void draw();
    void open();
    void close();
};

// Window.cpp
#include "Window.h"
using namespace std;
void Window::draw() {
    cout << title;
    cout << state;
}
void Window::open() {
    state = true;
}
void Window::close() {
    state = false;
}

// DialogWindow.h
#include "Window.h"
class DialogWindow : public Window {
public:
    void draw();
    int confirm();
    int cancel();
};

// DialogWindow.cpp
#include "DialogWindow.h"
using namespace std;
void DialogWindow::draw() {
    cout << "DialogWindow nacrtan\n";
}
int DialogWindow::confirm() {
    close();
    return 1;
}
int DialogWindow::cancel() {
    close();
    return 0;
}

// DocumentWindow.h
#include "Window.h"
using namespace std;
class DocumentWindow : public Window {
    void draw() {
        cout << "DocumentWindow nacrtan\n";
    }
};

// main
#include "Window.h"
#include "DialogWindow.h"
#include "DocumentWindow.h"
void main() {
    Window *p1, *p2;
    p1 = new DialogWindow;
    p2 = new DocumentWindow;
    p1->draw();
    p1->open();
    p1->close();
    p2->draw();
    p2->close();
    p2->open();
    delete[] p1, p2;
}