Idiomatic way of writing eol and flushing stdout with qt5?

qt.cpp

#include <QTextStream>

int main(int, char*[])
{
//  Works, but is hacky (note: empty string):
//  QTextStream(stdout) << "" << endl;
//  Does not compile:
//  QTextStream(stdout) << endl;

// Best? way (thanks to suy on #qt@freenode):
  QTextStream out(stdout);
  out << endl;
  
  return 0;
}

To test:

mkdir qt
cd qt
wget https://gist.github.com/e12e/f79e9f0e66ee3600e0aa/raw/7ab8239060134601e93a0013706df638af0b3edf/qt.cpp
qmake -project
qmake -makefile
make
./qt # outputs empty line