How to Pass data between 2 Dialogs in QT? - c++

Question

I need to pass an Array from one Dialog to another in Qt.
I have 6 Lineedits from which I collect numbers to store in my Array.
I want to transfer USERZAHLEN[] from SecDialog to ThirdDialog.
I've tried many solutions but none of them seem to work.
SecDialog.cpp
#
void SecDialog::on_pushButton_clicked()
{
int Zahl1 = ui->lineEdit_Zahl1->text().toInt();
int Zahl2 = ui->lineEdit_Zahl2->text().toInt();
int Zahl3 = ui->lineEdit_Zahl3->text().toInt();
int Zahl4 = ui->lineEdit_Zahl4->text().toInt();
int Zahl5 = ui->lineEdit_Zahl5->text().toInt();
int Zahl6 = ui->lineEdit_Zahl6->text().toInt();
int Userzahlen[] = {Zahl1, Zahl2, Zahl3, Zahl4, Zahl5, Zahl6};
hide();
thirddialog = new ThirdDialog(this);
thirddialog->show();
}
SecDialog.h
namespace Ui {
class SecDialog;
}
class SecDialog : public QDialog
{
Q_OBJECT
public:
int Zahl1, Zahl2, Zahl3, Zahl4, Zahl5, Zahl6;
explicit SecDialog(QWidget *parent = nullptr);
~SecDialog();
private slots:
void on_pushButton_clicked();
private:
Ui::SecDialog *ui;
ThirdDialog *thirddialog;
};
#endif // SECDIALOG_H
#
I'm mainly using Qt-Creator.