#ifndef OKNO_H
#define OKNO_H

#include <QMainWindow>

namespace Ui {
    class Okno;
}

class Okno : public QMainWindow
{
    Q_OBJECT

public:
    explicit Okno(QWidget *parent = 0);
    ~Okno();

private slots:
    void on_button8_clicked();

    void on_button7_clicked();

    void on_pushButton_clicked();

    void on_pushButton_11_clicked();

private:
    Ui::Okno *ui;

    QString first;
    char mark;
    void digit (char c);
    void arit (char c);
    void calc ();
};

#endif // OKNO_H