#include <QtGui>#include <iostream>using namespace std;qlonglong imageSpace(const QString &path){    QDir dir(path);    qlonglong size = 0;    QStringList filters;    foreach (QByteArray format, QImageReader::supportedImageFormats())        filters += "*." + format;    foreach (QString file, dir.entryList(filters, QDir::Files))        size += QFileInfo(dir, file).size();    foreach (QString subDir, dir.entryList(QDir::Dirs                                           | QDir::NoDotAndDotDot))        size += imageSpace(path + QDir::separator() + subDir);    return size;}int main(int argc, char *argv[]){    QCoreApplication app(argc, argv);    QStringList args = app.arguments();    QString path = QDir::currentPath();    if (args.count() > 1)        path = args[1];    cout << "Space used by images in " << qPrintable(path)         << " and its subdirectories is " << (imageSpace(path) / 1024)         << " KB" << endl;    return 0;}