passing command line arguments to QApplication

int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);
    QTextStream stream(stdin); //enter the file name
    QString UserFileName = stream.readLine();
// is it the correct method to get the file name from user in command line??
// if yes than how to add this value to argv[]??
    QStringList args = app.arguments();
    if (args.count() != 2)
    {
        std::cerr << "argument required" << endl;
        //return 1;
    }
    
    WorkerThread WThreadObj;
    WThreadObj.StartFileAnalysis(args[1]);   //pass cmd 2nd argument
    return app.exec();
}