As we keep getting reminded on IRC, it's not the language that's fast, it's its implementation. After that, how it's used; minding space/time complexity - or not - impacts speed too.
And specific language implementations are identified:
C gcc 12.2.0-3ubuntu1
C clang Ubuntu clang version 15.0.2-1
And specific source code is shown:
https://benchmarksgame-team.pages.debian.net/benchmarksgame/...