Qt creates a main.o file he cannot execute

[sylas]

Hi all. I found the World Time Clock Example | Qt 4.8 and tried to create it with my Qt Creator. Documentation gives many files but no main.cpp available. Seems strange !
I created the main.cpp missing (see code below). The project compiles well, but, at the execution, (which is available) he says "no executable specified". Does it mean "cannot execute this main.o" ?? Here is the code of my main.cpp
#include <QApplication>
#include "worldtimeclock.h"
#include "worldtimeclockplugin.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
WorldTimeClock clock;
#if defined(Q_OS_SYMBIAN)
clock.showMaximized();
#else
clock.show();
#endif
return app.exec();
}


Sorry, I don't find how to tag the above code !