comment style
Steven King
sking at nowhere.uucp
Mon Jan 14 14:04:52 AEST 1991
In article <551 at taumet.com> steve at taumet.com (Stephen Clamage) writes:
>NOTE: Not all existing preprocessors treat // comments the same way.
>What I have stated above is as specified in the latest documentation
>for C++. Some existing (older) C++ compilers behave differently.
>For C, // comments are an extension, not part of any standard, so who
>knows what different compilers will do?
>--
Microsoft C, surprisingly enough, handles this correctly, while
pcc's cpp ignores the // so that
#define RDR 1 // reader
x = y[RDR] ;
is expanded to
x = y[1 // reader]
resulting in a very frustrating source of error messages from cfront.
This is a problem with most implementations of cfront that dont supply
their own cpp and even with a few that do.
( the LPI c compiler, which claims to be ANSI, ignores _//_, and barfs at
things like _#ident_ and most everything else )
--
..!cs.utexas.edu!ut-emx!nowhere!sking
been dazed and confused for so long its true; wanted an OS, never bargined for
you. Lotsa people hacking, few of them know, kernal of unix was created below...
More information about the Comp.std.c
mailing list