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From: dave@cs.arizona.edu (Dave P. Schaumann)
Newsgroups: comp.lang.c
Subject: Re: Question: Representing complex numbers in C
Message-ID: <974@caslon.cs.arizona.edu>
Date: 28 Feb 91 03:32:14 GMT
References: <12620.27cbe36f@ecs.umass.edu>
Organization: U of Arizona CS Dept, Tucson
Lines: 28

In article <12620.27cbe36f@ecs.umass.edu> lim@ecs.umass.edu writes:
>[FORTRAN can do this:]
>
>COMPLEX x, y, z;
>z = x + y;
>etc.
>
>[How is it done in C?]

Can't be done.  The closest you can come is

typedef struct { double r ; doube i } complex ;

complex x, y, z ; ...
z.r = x.r + y.r ; z.i = x.i + y.i ;

Now, you could make it a little better by defining functions to do addition,
and other ops, but that's as close as you can get in C.

C++ on the other hand, will let you overload the + operator with new
operations, just as you want.


-- 
		Dave Schaumann		dave@cs.arizona.edu
'Dog Gang'!  Where do they get off calling us the 'Dog Gang'?  I'm beginning to
think the party's over.  I'm beginning to think maybe we don't need a dog.  Or
maybe we need a *new* dog.  Or maybe we need a *cat*! - Amazing Stories