For good C, which is hard to write - for me and other mortal humans.<p>On the other hand, as a mortal, I can write a-grade-above-code-that-an-idiot-would-write-just code in Java at about 10 times the speed I can write dire-useless-risible C code.<p>The comparison is pointless though, good modern languages like Rust and Julia are developing and LLVM is enabling further development.