C / C++ / MFC

#include <QDebug>

#include <QCoreApplication>
#include <QObject>
#include <QTimer>

class Foo : public QObject
{
    Q_OBJECT

    public:
    Foo( QObject* parent = 0 ) : QObject( parent )
    {}

    private:
    void doStuff()
    {
        qDebug() << "Emit signal one";
        emit signal1();

        qDebug() << "Emit finished";
        emit finished();

        qDebug() << "Emit signal two";
        emit signal2();
    }

    signals:
    void signal1();
    void signal2();

    void finished();

    public slots:
    void slot1()
    {
        qDebug() << "Execute slot one";
    }

    void slot2()
    {
        qDebug() << "Execute slot two";
    }

    void start()
    {
        doStuff();

        qDebug() << "Bye!";
    }
};

int main( int argc, char** argv )
{
    QCoreApplication app( argc, argv );

    Foo foo;

    QObject::connect( &foo, &Foo::signal1, &foo, &Foo::slot1 );
    QObject::connect( &foo, &Foo::signal2, &foo, &Foo::slot2 );

    QObject::connect( &foo, &Foo::finished, &app, &QCoreApplication::quit );

    QTimer::singleShot( 0, &foo, &Foo::start );
    return app.exec();
}

#include "main.moc"

QString binaryNumber = QString::number(hexadecimalNumber.toLongLong(&ok, 16), 2).rightJustified(4,'0').leftJustified(8,'0');

pFT857_library->CAT_Data_String[CAT_Data_Index].mid(0,1).number(pFT857_library->CAT_Data_String[CAT_Data_Index].mid(0,1).toInt(),2).leftJustified(7,'0');

I have Qt style string QString frequency = "1426000" split into another QString as 
QString frequency_array = "01 42 60  00" 
I need to change each pair as 8 bit binary with 
MSD as upper 4 bits of the 8 bit word
AND 
LSD as lower 4 bits of the 8 bit word

For debugging purpose I like to print each step of the conversion.

As an example , I like to see "42 "
as
"01000010" 

I prefer Qt QString  in C++ code

Here is my code so far 



```
    for (int index = 0; index <6 ; index++)
    {
    text = pFT857_library->CAT_Data_String[index];
    m_ui->lineEdit_14->setText(text);
    qDebug() << text;
    text = text.mid(0,1).toLocal8Bit();
    qDebug() << text;

    text = pFT857_library->CAT_Data_String[index];
    text = text.mid(1,1).toLocal8Bit();
    qDebug() << text;

    }

```

int n =  pFT857_library->CAT_Data_String[CAT_Data_Index].toInt();
    text = pFT857_library->CAT_Data_String[CAT_Data_Index].number(n,2);
    qDebug() << text;