Re: ObjC BOOL and boolean c expressions
Re: ObjC BOOL and boolean c expressions
- Subject: Re: ObjC BOOL and boolean c expressions
- From: Eyal Redler <email@hidden>
- Date: Sat, 01 Sep 2007 08:34:22 +0300
I'd like to thank everybody for the informative answers.
On Aug 31, 2007, at 21:28, Charles Steinman wrote:
--- John Stiles <email@hidden> wrote:
I *think* that the C spec doesn't specify the result
of a boolean
expression other than "zero means false, nonzero
means true." So from
a "compliance with the spec" standpoint, the first
version might
return different results from the second version.
I don't know about earlier versions, but the C99 spec
guarantees that they will return 1 if true and 0 if
not. The logic for determining whether something is
true or false still boils down to "zero means false,
nonzero means true," obviously, but the operators
themselves can only return 1 or 0.
Cheers,
Chuck
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