The case of typeof has already been discussed for C99 and it has been rejected. In ISO C99 Rationale document (section 6.7.7), it is written: "A proposed typeof

The case of typeof has already been discussed for C99 and it has been rejected. In ISO C99 Rationale document (section 6.7.7), it is written: "A proposed typeof operator was rejected on the grounds of insufficient utility." Don't forget most of the work of the C committee is spent in resisting features suggestions.