Use an actual different language. Ada, Rust, Zig, D, Lisp/Scheme/Racket, Tcl, Forth, etc. ... something other than C.

Don't preprocess C into a slightly broken other language that you wish it were. Use C as C, or use something else.

There’s one approach. I wouldn’t personally recommend using macros outside of include guards and file inclusion. Still, if you need more functionality, the methods exist.