c-forward-sexp is a Lisp macro in `cc-defs.el'.

(c-forward-sexp &optional COUNT)

Move forward across COUNT balanced expressions.
A negative COUNT means move backward. Signal an error if the move
fails for any reason.

This is like `forward-sexp' except that it isn't interactive and does
not do any user friendly adjustments of the point and that it isn't
susceptible to user configurations such as disabling of signals in
certain situations.