by Bill Tuthill from the January 1985 issue of Unix Review magazine C is descended from B, which was descended from BCPL. BCPL (Basic Combined Programming Language) was developed in 1967 by Martin Richards. B was an interpretive language written in 1970 by Ken Thompson (1) after he abandoned a Fortran implementation for the PDP-7. BCPL and B were typeless languages, which may account for the type permissiveness of C. They restricted their scope to machine words and were rather low level.
