It reminds me of the 2008 Underhanded C code contest. The subject was exactly this. https://www.underhanded-c.org/_page_id_17.html https://www.underhanded-c.or

It reminds me of the 2008 Underhanded C code contest. The subject was exactly this. https://www.underhanded-c.org/_page_id_17.html https://www.underhanded-c.org/_page_id_17.html And the winner's solution is incredibly simple and clever.