Yes the latest SAS had C++, but that was done with an extra
pre-compiler, and is damn slow (o.k. last time I gtried it was
on a 030/32mhz). It is also a rather old version of C++, so better
don't even think about that.
Your options:
Download gcc (for free)and be prepared for some serious tackling.
Buy the latest DEV-CD which comes with a free copy of StormC3,
ought to be enough for most projects and the CD is a must anyways.
Get GoldED-AIX wich comes with a preconfigured gcc-setup.
Only the 2nd option offers you a debugger, but won't be able
to produce any code for OS4/MOS (not even sure if that version
has PPC-support at all).
So
easy way : StormC/DEV-CD
cheap way : gcc pure
best way (IMHO) : GoldED