from
Jargon File (4.4.4, 14 Aug 2003)
Classic C
/klas'ik C/, n.
[a play on `Coke Classic'] The C programming language as defined in
the first edition of {K&R}, with some small additions. It is also
known as `K&R C'. The name came into use while C was being
standardized by the ANSI X3J11 committee. Also `C Classic'.
An analogous construction is sometimes applied elsewhere: thus, `X
Classic', where X = Star Trek (referring to the original TV series) or
X = PC (referring to IBM's ISA-bus machines as opposed to the PS/2
series). This construction is especially used of product series in
which the newer versions are considered serious losers relative to the
older ones.