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Re: [avr-gcc-list] Cpp Question

From: Joerg Wunsch
Subject: Re: [avr-gcc-list] Cpp Question
Date: Thu, 4 Sep 2003 17:13:14 +0200 (MET DST)

As "=?ISO-8859-2?Q?Matja=BE_Jane=BEi=E8?="
<address@hidden> wrote:

>I'm trying to program a function which returns values as parameters:
>void foo(int a, int b, float c)
>but it does't work

Sure.  If you want to program in C, well, you gotta learn
it.  This is basically a C beginner's questin, unrelated
to the AVR.

Basically, you need to calculate the address yourself.

void foo(int a, int *b, float *c)
 *c = sqrt(a + *b)

And you have to call it with

 foo(a, &b, &c);

C++ has the concept of reference parameters which is closer to the
Pascal var parameters.

J"org Wunsch                                           Unix support engineer
address@hidden        http://www.interface-systems.de/~j/

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