On Mar 12, 2016, at 10:49 AM, Charles Anthony
< 
 charles.unix.pro at gmail.com> wrote:
 There is a also the GCOS TSS subsystem which is an interactive 
 programming
  environment supporting several languages (Multics
includes the BASIC and
 FORTRAN runtimes). Sadly, there remain some emulator bugs that are 
 causing
  some failures under TSS; and lacking the source
code for TSS, it is 
 proving
  to be an intractable issue.
 -- Charles 
 That would almost be enough for me from the sounds of things.  Too bad
 there are issues.  I don?t suppose there is Waterloo C?  That was a painful
 way to try to learn C programming. :-)  Definitely not K&R.
 
 I don't know the origins of the Multics C compiler; we don't have the
sources. Grepping the executable yields:
PCC/PCCrx UNIX 6.X
I don't know my earlier C compiler history, but I;m guessing 'Portable C
Compiler"
I don't believe that TSS has a C subsystem.
-- Charles