C++ (Qt)
connect(pmanager, SIGNAL(finished(QNetworkReply *)), SLOT(httpFinished(QNetworkReply *)));
for(int n = 1;n<30; n++)
{
        pmanager->get(QNetworkRequest(QUrl("http://host.ru/file"+QString::number(n)+".html")));
}
 
...
 
void MyClass::httpFinished(QNetworkReply *reply)
{
	QString fileName = reply->url().toString();
	fileName.remove(0, fileName.lastIndexOf('/') + 1); // оставить только имя файла
 
	QFile file(fileName);
	if (file.open(QIODevice::WriteOnly))
	{
		file.write(reply->readAll());
		file.flush();
		file.close();
	}
 
	reply->deleteLater();
	reply = 0;
 
	qDebug("file '%s' downloaded", qPrintable(fileName));
}