#include <QtWidgets>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QProgressBar progress1, progress2, progress3, progress4;
    progress1.setRange(0,100);
    progress1.setValue(50);
    progress1.show();
    progress2.setRange(0,100);
    progress2.setValue(50);
    progress2.setOrientation(Qt::Vertical);
    progress2.show();
    progress3.setRange(0,100);
    progress3.setValue(100);
    progress3.show();
    progress4.setRange(0,100);
    progress4.setValue(100);
    progress4.setOrientation(Qt::Vertical);
    progress4.show();
    return app.exec();
}