I made a small C compiler that can do most basic functionality(nothing too fancy but everything basic in C), so far, it only takes input from cli args, but I'm working on integrating file input and adding more C features to make it more robust github.com/rjan939/small-c-compiler
I made a music transposer with my favorite programming language C: github.com/rjan939/music-transposer currently it supports transposing notes only based on semitones