Message-Id:	<199812121407.OAA19058@remus.clara.net>
From:	"Arthur" <arfa AT clara DOT net>
To:	<djgpp AT delorie DOT com>
Subject:	RE: [Q]complex in djgpp
Date:	Sat, 12 Dec 1998 14:06:20 -0000
X-Priority:	3 (Normal)
X-MSMail-Priority:	Normal
X-Mailer:	Microsoft Outlook 8.5, Build 4.71.2173.0
X-MimeOLE:	Produced By Microsoft MimeOLE V4.72.3110.3
In-Reply-To:	<001701be25b0$73ec7260$2ef8c6c3@johans-dator>
Importance:	Normal
Reply-To:	djgpp AT delorie DOT com

> >I want to compile this program types.
> >
> >/* main.C */
> >#include <complex.h>
> >...
> >int main(void)
> >{
> >    complex a,b,c;
> >    b=sin(a)
> >    c=a+b;
> >....
> >}
> >
> >BUT
> >
> >commnad :
> >    g++ -c main.C
> >
> >error messange :
> >    main.C:81 'complex' undeclared <first use this function>
> >
> >How can I overcome this compile error.
>
> What is a complex?

A complex number is a number consisting of two parts - a real part (what you
know as numbers) and an imaginary part (a multiple of the square root
of -1). C++ contains an overloaded class to handle these kind of numbers.

Section 8.10 of the FAQ suggests you try using an optimisation, such as -O.

James Arthur - jaa AT arfa DOT clara DOT net
http://www.jado.org/users/arfa/
ICQ#15054819

- Raw text -