SAS is a commercial C compiler for the Amiga. It don't support C++ though. It
used to be Lattice C for the Amiga, and they had a Lattice C++ compiler. I
think they still sell the C++ compiler, but it might not be the latest C++
specification.
Lattice C++ is a completely seperate product, and I wouldn't recommend
that anyone buy it. It's out of date (five years old and never
updated), it's buggy, and it has no support.
SAS Institute will be coming out with its own C++ system this fall.
It will be an upgrade to the existing Version 6 product.
–Doug