On Thu, 2008-08-28 at 11:09 -0500, Mike Chambers wrote:
> On Thu, 2008-08-28 at 10:32 -0500, Mike McCarty wrote:
>
> > It's (traditional) C. Put it into a file like self-rep.c and then
> >
> > $ gcc -o self-rep self-rep.c
> > $ ./self-rep
> >
> > and see what happens.
>
> [mike@scrappy ~]$ gcc -o test test.c
> test.c:1: warning: data definition has no type or storage class
> test.c:1: warning: initialization makes integer from pointer without a
> cast
> test.c: In function ‘main’:
> test.c:1: warning: incompatible implicit declaration of built-in
> function ‘printf’
> test.c:1: warning: passing argument 1 of ‘printf’ makes pointer from
> integer without a cast
> [mike@scrappy ~]$ ./test
> p="p=%c%s%
> c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);}[mike@scrappy
> ~]$
>
> That's what happened when doing it on a F9 box.
A later post in the thread gets by with one warning for not #including
stdio.h, but getting it perfectly standard and portable is tough.
For one thing, the #include is required and has to be on its own line.
For another, it relies on the fact that ASCII 34 is ".
--
Matthew Saltzman
Clemson University Math Sciences
mjs AT clemson DOT edu
http://www.math.clemson.edu/~mjs
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