From:	Weiqi Gao <weiqigao AT a DOT crl DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: enum - Why does true == false?
Date:	Thu, 16 Sep 1999 23:31:37 -0500
Organization:	CRL Network Services
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To:	djgpp AT delorie DOT com
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Carl Hover wrote:
> 
> Why does this program print "true == false" when compiled with djgpp
> v2.01, and "true != false" when compiled with Borland C++ 3.1? Are
> enum constants ill-defined during preprocessing?

See K&R p.232, l.-11.

> #include <stdio.h>
> 
> int main(void)
> {
>   enum {false, true};
> 
>   #if true == false
>     printf("true == false\n");
>   #endif
> 
>   #if true != false
>     printf("true != false\n");
>   #endif
> 
>   return 0;
> }

-- 
Weiqi Gao
weiqigao AT a DOT crl DOT com

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