What is cpp ???

[NEUKLAUS%NEUVM1.BITNET at wiscvm.ARPA]

                  Hi C people.

I am new at this list, and I just heard about 'cpp'. Can anyone tell
me what it is? (A compiler :-))) ?).

Thanks for your help.
              Klaus Elmquist Nielsen.

BITNET: NEUKLAUS at NEUVM1.BITNET