Re: complex variable

[Jan-Benedict Glaw <jbglaw@lug-owl.de>]

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On Wed, 2004-09-08 23:54:45 +0200, Charlie Gordon <gmane@chqrlie.org>
wrote in message <chnv2v$j6n$1@sea.gmane.org>:
> "Jan-Benedict Glaw" <jbglaw@lug-owl.de> wrote in message
> news:20040908120658.GZ6985@lug-owl.de...
> 
> > > >                 for(i=0; i< N; i++)
> > > >                     printf("%lf\t", in[i]);

> it's ugly because the whole complex number in whatever storage format it's
> in gets passed to printf.

Right.

> In my understanding, this may fail because there is no guaranty about which
> part of the structure will be printed and the format specifier may be
> incorrect for the actual type thus passed.

Right, too. Here's how it ought to work:

-----------------------------------------------------------
#include <complex.h>
#include <stdio.h>
#include <stdlib.h>

int
main (int argc, char *argv[])
{
	complex co;

	co = 1.3 + I * 2.9;
	printf ("%lf %lf\n", creal (co), cimag (co));

	return EXIT_SUCCESS;
}
-----------------------------------------------------------

So you basically use creal() and cimag() to access the two numbers.

MfG, JBG

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