[OT] Visual C++ question

[gaf at gaf.blu.org (Jerry Feldman)]

If I had Visual C++ I would have found an answer :-)
On 14 Feb 2003 15:56:15 -0500
kclark at CetaceanNetworks.com (Kevin D. Clark) wrote:

> 
> Jerry Feldman <gaf at gaf.blu.org> writes:
> 
> > I teach C programming at Northeastern, and most of my students this
> > quarter are using GCC, but WRT: Visual C++. 
> > How does one tell Visual C++ that it should be compiling a straight
> > C program, not C++. 
> > 
> > Also, the same might go for Borland also. 
> 
> In my experience, VC++ doesn't automatically go into "C only" mode
> when compiling a file with a certain extension (like ".C").  I looked
> for a flag to force this a long time ago but I don't remember if I
> found anything or not.
> 
> However, assuming that VC++ is purporting to be a C compiler, what
> happens when you send the following code through it?:
> 
> 
>   /* author:  dan pop */
>   #include <stdio.h>  
> 
>   #if defined __STDC_VERSION__ && __STDC_VERSION__ == 199901L
>   int c99 = 1;
>   #else
>   int c99 = 0;
>   #endif
> 
>   int main(void) 
>   {
>       if (1 //* */ 2
>            ) {
>           if (c99) puts("C99 compiler.");
>           else if (sizeof 'a' > 1) puts("Broken C89 compiler.");
>           else puts("C++ compiler.");
>       }
>       else puts("C89 compiler.");  
>       return 0;
>   }
> 
> 
> You hit the nail on the head when you stated that C is not a subset of
> C++ and C++ is not a superset of C... 
> 
> Regards,
> 
> --kevin
> -- 
>  If you want to program in C, program in C.  It's a nice language.  I
>     use it occasionally...   :-)
>             --Larry Wall in <7577 at jpl-devvax.JPL.NASA.GOV>
> 
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