Problem With findchild()

[gunturrohith]

Hi i am trying to use the findChlid(), and i was getting error after running it that is
The program has unexpectedly finished

Here is my Code:
The Header File

class menuprocess : public QWidget
{
	Q_OBJECT
public:
	menuprocess();
	~menuprocess();
private:
QLabel *io_one;
private slots:
int tester();
};

class menuprocess : public QWidget
{
	Q_OBJECT
public:
	menuprocess();
	~menuprocess();
private:
QLabel *io_one;
private slots:
int tester();
};

To copy to clipboard, switch view to plain text mode 

The CPP File

menuprocess::menuprocess()
{
io_one = new QLabel(this);
testButton = new QPushButton(this);
    testButton->setText("Test");
    testButton->setGeometry(250,130,40,30);
}
 
int menuprocess::tester()
{
QStringList ios;
    ios << "RFID" << "MagSwipe" << "RTC" << "IFD" <<"PM";
QStringList obs;
    obs << "io_one" << "io_two" << "io_three" << "io_four";
        QLabel *label = parentWidget()->findChild<QLabel *>(obs.at(j));[B]I have used both the Lines this one and the next one by commenting one among this[/B]
        QLabel *label = this->findChild<QLabel *>(obs.at(j));
        qDebug()<<"The OBJECT NAME is"<<label->objectName();//at this line i am getting error[B]The program has unexpectedly finished[/B]
label->setText(ios.at(i));[B]//And here too the same error if i comment the QDebug Line[/B]
}

menuprocess::menuprocess()
{
io_one = new QLabel(this);
testButton = new QPushButton(this);
    testButton->setText("Test");
    testButton->setGeometry(250,130,40,30);
}

int menuprocess::tester()
{
QStringList ios;
    ios << "RFID" << "MagSwipe" << "RTC" << "IFD" <<"PM";
QStringList obs;
    obs << "io_one" << "io_two" << "io_three" << "io_four";
        QLabel *label = parentWidget()->findChild<QLabel *>(obs.at(j));[B]I have used both the Lines this one and the next one by commenting one among this[/B]
        QLabel *label = this->findChild<QLabel *>(obs.at(j));
        qDebug()<<"The OBJECT NAME is"<<label->objectName();//at this line i am getting error[B]The program has unexpectedly finished[/B]
label->setText(ios.at(i));[B]//And here too the same error if i comment the QDebug Line[/B]
}

To copy to clipboard, switch view to plain text mode 

Is it possible todo so in this manner if yes

Please do need ful

Thanks in advance

Regards,
Rohith.G