There are 3 repositories under c-standard-library topic.
source code of The Standard C Library, by Plauger
A simple x86 operating system with graphical user space
A tutorial for debugging with gdb
A recode of some standard C library functions as well as other utility functions
Assignments dell'esame di Sistemi operativi anno 2015/16 (laurea in Informatica @ UniPisa)
Implementing a function similar to the printf function from C standard library.
Mini-libc is a minimal C standard library for Linux, educational purpose, designed as a lightweight alternative to glibc. Built directly on syscalls, it provides essential functions like string handling, memory management, and file I/O.