The C standard library comes from stdio.h stdlib.h stdint.h, these files have the essential functions that C uses. Rust
has it's own std library but it isn't directly supported in the Linux kernel (yet). FOMOSv2-CL v2.3.5 and any future
versions rely on the Linux kernel for many things, to make development easier FOMOS which is written in Rust calls C std
functions from this library.