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Groups > comp.lang.c > #11603

Re: unsigned == signed ?

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Quentin Pope wrote:
 
> true, my mistake.
> however the values are converted first. to prove it, try this
> long x = -1; /* (32 bit, signed) */
> unit y = -1; /* (16 bit, unsigned) */
> if (x == y)  printf("EQUAL");
> will print EQUAL !

Here's what I get for output:

/* BEGIN output from new.c */
    NOT!!!
/* END output from new.c */

And here's the program:

/* BEGIN new.c */

#include <stdio.h>

int 
main(void)
{
    long x = -1; 
    unsigned char y = -1; 

    puts("\n/* BEGIN output from new.c */");
    if (x == y) {
        puts("EQUAL");
    } else {
        puts("    NOT!!!");
    }
    puts("/* END output from new.c */");
    return 0;
}

/* END new.c */

-- 
pete

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Thread

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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