Run executable from within C++/Qt

[timmu]

Dear Santosh,

Thanks again.
The below code makes a QString that is empty as this does not print anything on the screen

QObject *parent;
QString program = "./ent";
QStringList arguments;
arguments << "-b" << "-t" << "input.txt";
 
QProcess *myProcess = new QProcess(parent);
myProcess->start(program, arguments);
 
 
if(myProcess->waitForStarted(5000))
{
    QByteArray out_data = myProcess->readAllStandardOutput();
    QString out_string(out_data);
    qDebug() << out_string.toStdString().c_str();
    cout << "results: " << out_string.toLocal8Bit().constData() << "\n"; 
}
else
{
    qDebug() << "myProcess did not start in time";
}

QObject *parent;
QString program = "./ent";
QStringList arguments;
arguments << "-b" << "-t" << "input.txt";
 
QProcess *myProcess = new QProcess(parent);
myProcess->start(program, arguments);


if(myProcess->waitForStarted(5000))
{
    QByteArray out_data = myProcess->readAllStandardOutput();
    QString out_string(out_data);
    qDebug() << out_string.toStdString().c_str();
    cout << "results: " << out_string.toLocal8Bit().constData() << "\n"; 
}
else
{
    qDebug() << "myProcess did not start in time";
}

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I know that the other program works because this gives me the correct answer:

system("./ent -b -t input.txt");

system("./ent -b -t input.txt");

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Do you advise against using the latter version?