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Re: unsigned == signed ?

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Raj Pashwar <raj121190@hotmail.NOSPAM.com> writes:
> int main()
> {
> uint x = -1;
> int y = -1;
> if (x == y)
> printf("EQUAL");
> else
> printf("NOT EQUAL");
> }
> 
> This code prints "EQUAL". Does this mean that bit comparison is done for 
> the
> equality test? If it doesn't can you give me an example that shows bit
> comparison isn't done? I also wanted to know if we can assign a number to
> uint & int variables such that "unit var != int var". Thanks so much 

C will only compare equal types. In order to perform what looks 
like a comparison between unequal types, an implicit conversion 
is made first such that the things actually being compared are 
the same type. See the description of the '==' operator in the 
standard (google for n1256.pdf if you don't already have a copy).

Phil
-- 
"Religion is what keeps the poor from murdering the rich."
-- Napoleon

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unsigned == signed ? Raj Pashwar <raj121190@hotmail.NOSPAM.com> - 2011-10-11 19:43 +0000
  Re: unsigned == signed ? Keith Thompson <kst-u@mib.org> - 2011-10-11 12:57 -0700
  Re: unsigned == signed ? James Kuyper <jameskuyper@verizon.net> - 2011-10-11 16:23 -0400
  Re: unsigned == signed ? Quentin Pope <qp19433@hotmail.NOSPAM.com> - 2011-10-11 20:33 +0000
    Re: unsigned == signed ? James Kuyper <jameskuyper@verizon.net> - 2011-10-11 16:40 -0400
    Re: unsigned == signed ? Keith Thompson <kst-u@mib.org> - 2011-10-11 14:34 -0700
      Re: unsigned == signed ? Quentin Pope <qp19433@hotmail.NOSPAM.com> - 2011-10-12 16:04 +0000
        Re: unsigned == signed ? Keith Thompson <kst-u@mib.org> - 2011-10-12 10:49 -0700
        Re: unsigned == signed ? pete <pfiland@mindspring.com> - 2011-10-12 21:12 -0400
    Re: unsigned == signed ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-10-11 22:35 +0100
      Re: unsigned == signed ? Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-10-13 14:54 +0300
        Re: unsigned == signed ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-10-13 15:26 +0100
    Re: unsigned == signed ? "J. J. Farrell" <jjf@bcs.org.uk> - 2011-10-12 03:02 +0100
  Re: unsigned == signed ? Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-10-13 13:56 +0300

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