Depending on transpiler (compilers that will compile to C), you can get near representation in C (rarely) or something completely different (frequently). In Scheme/LISP world (where transpilers were popular for a while), even a simple expression like "(+ 1 1)" will rarely give you something like: "int a = 1 + 1;". I've seen these things would produce dozen of lines of various boxing/unboxing calls, type checks and GC protection marks. If the compiler is really aggressive, it will just put "2" as a constant.

I think that the only benefit of "compiling to C" was reusing existing compilers, not tooling around it. Also, debugging that code is a nightmare unless you are intimate with transpiler internals.