=== ANSI C and ISO C ===During the late 1970s and 1980s, versions of C were implemented for a wide variety of mainframe computers, minicomputers, and microcomputers, including the IBM PC, as its popularity began to increase significantly.
Po objavi K&R C so k jeziku dodali več gradnikov, ki so jih podpirali prevajalniki, na primer od AT&T (še posebej PCC) in od nekaterih drugih ponudnikov.