Write to STDOUT using QFile

CMakeListst.txt

cmake_minimum_required(VERSION 3.2.0 FATAL_ERROR)
project(stdout)

find_package(Qt5Core 5.4 REQUIRED)

add_executable(stdout main.cpp)
target_link_libraries(stdout Qt5::Core)

main.cpp

#include <cstdio>

#include <QFile>

int main(int argc, char **argv)
{
    QFile f;
    f.open(stdout, QIODevice::WriteOnly);
    f.write("This is a test.");
    f.close();
}