how to transfer files from raspberry pi to External USB Drive?

[Ramkumar Mohan]

how to transfer files from raspberry pi to External USB Drive?
c++ code :-

[SGaist]

Hi,

QFile::copy.

One hint: search the Qt documentation, there's quite a lot of stuff in there.

[Ramkumar Mohan]

@SGaist
Hi,

bool copyFiles() {
const QString srcPath = QFileDialog::getOpenFileName(this, "Source file", "",
"All files (.)");
if (srcPath.isNull()) return false; // QFileDialog dialogs return null if user canceled

const QString dstPath = QFileDialog::getSaveFileName(this, "Destination file", "",
"All files (.)"); // it asks the user for overwriting existing files
if (dstPath.isNull()) return false;

if (QFile::exist(dstPath))
if (!QFile::remove(dstPath)) return false; // couldn't delete file
// probably write-protected or insufficient privileges

return QFile::copy(srcPath, dstPath);
}

These codes work well. Thanks