It is not a fork from 95. Cfront, the original C++ compiler was a new front-end for the C compiler from 1983 that output C which was then compiled regularly.
Maybe, but I do not see according to which definition of 'fork' C++ before its standardization in 1998 could be considered a fork. It was an extension.
(Also, as a comment to other responses: C++ is not a superset of C, it is a fork from 95 with divergent language evolution since then).