The original author is Wenjun Wang (Chief Architect of MIUI, Xiaomi Technology).
(1) The directory UCC contains the source code of the lightweight open-source C compiler (C89 standard).
(2) If you are interested in how to interpret a simplified C language, please refer to the directory MYC, which includes an interpreter.
(3) The directory ucc/examples/sc contains the code for Chapter 1 in the book (The Dissection of C Compiler.pdf).