From:	John Kugelman <kugelman AT mnsinc DOT com>
Newsgroups:	comp.lang.c,comp.os.msdos.djgpp
Subject:	Re: Casting void pointers
Date:	Mon, 22 Jun 1998 01:31:01 -0400
Organization:	Verio Mid-Atlantic
Lines:	26
Message-ID:	<358DEC15.7441F34@mnsinc.com>
References:	<6mkaos$k7o AT dfw-ixnews6 DOT ix DOT netcom DOT com> <358DE928 DOT 2F8C4608 AT mnsinc DOT com>
NNTP-Posting-Host:	kugelman.mnsinc.com
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

I wrote:
> 
>     double foo (double d)
>         { return d * 2.0; }
> 
>     int main (void)
>     {
>         /* Store function pointer in "generic" pointer. */
>         void (*func) (void) = foo;
> 
>         /* Cast pointer back to original type before calling it. */
>         printf ("%f\n", ((double (*) (double)) func) (5.0));
> 
>         return 0;
>     }

Silly me, I went and ignored my compiler's warnings (I just can't
explain it).  There should be an #include <stdio.h> at the top, and foo
should be cast to the appropriate type in the initialization of func.

-- 
John Kugelman.  kugelman AT mnsinc DOT com

I believe we can change anything.
I believe in my dream.
    - Joe Satriani

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