#include <QTextStream>

int main()
{
    QTextStream out(stdout, QIODevice::WriteOnly);
    QTextStream in(stdin, QIODevice::ReadOnly);

    out << "Enter unicode char: " << flush;
    QString line = in.readLine();
    out << "Displays correctly: " << line << ", not the correct utf-8 code: " << line.toUtf8().toHex() << endl;

    in.setCodec("UTF-8");
    out.setCodec("UTF-8");
    out << "\nEnter unicode char: " << flush;
    line = in.readLine();
    out << "Displays correctly: " << line << ", possibly the correct utf-8 code: " << line.toUtf8().toHex() << endl;
}