ROBOTC.net forums - View topic - Function with array parameter and class

View unanswered posts | View active topics

It is currently Wed May 22, 2013 4:20 am

Function with array parameter and class

Moderator: magicode

Page 1 of 1

[ 3 posts ]

Print view

Previous topic | Next topic

Function with array parameter and class

Author

Message

swonder

Rookie

Joined: Sat Mar 14, 2009 3:53 am
Posts: 6

Function with array parameter and class

When i declare a function with array parameter and class.
I always get error.
Part of the codes is a as below,

struct typedef
{
int a;
int b;
} data;

data call(int sh[], data temp);

task main()
{
data one;
one.a = 1;
one.b = 1;
int sh[5];
sh[4]....[0] = 1; //short form
one = call(sh, one);
}

data call(int h[], data temp2)
{
............
return temp2;
}

How to declare function with array parameter and class correctly?
Help please.

Sat Mar 14, 2009 4:08 am

mightor

Moderator

Joined: Wed Mar 05, 2008 8:14 am
Posts: 2863
Location: Rotterdam, The Netherlands

Re: Function with array parameter and class

RobotC does not support passing arrays to functions. I suggest you use a struct of some kind. I used the following kludge:


	Code: /** * Array of bytes as a struct, this is a work around for RobotC's inability to pass an array to * a function. The int has to be there or it won't work. / typedef struct { byte arr[MAX_ARR_SIZE]; int stupid_work_around_for_array_bug; } tByteArray; /* * Array of ints as a struct, this is a work around for RobotC's inability to pass an array to * a function. The byte has to be there or it won't work. */ typedef struct { int arr[MAX_ARR_SIZE]; byte arrays_in_robotc_are_bugged_as_hell; } tIntArray;

This seems to work. Not sure if returning a struct from a function works. I wouldn't bet on it.

Regards,
Xander

_________________
| Some people, when confronted with a problem, think, "I know, I'll use threads,"
| and then two they hav erpoblesms. (@nedbat)
| My Blog: I'd Rather Be Building Robots
| ROBOTC 3rd Party Driver Suite: [Project Page]

Sat Mar 14, 2009 5:58 am

Ford Prefect

Senior Roboticist

Joined: Sat Mar 01, 2008 12:52 pm
Posts: 936
Location: a small planet in the vicinity of Beteigeuze

Re: Function with array parameter and class

... and as far as I know, in ROBOTC this aint working never:


	Code: data call(int h[], data temp2)

you have to fill in the size of h[], ROBOTC didn't work when I once tried to do sth like this.

ROBOTC is not C, its hardly "not quite C" and - as Mightor said - bugged like hell... :breakcomputer:

_________________
Ford Prefect

Never purchase release 1.x ! (ancient programmer's wisdom)
"Don't argue with idiots. They'll drag you down to their level and then beat you with experience."

Sat Mar 14, 2009 9:04 am

Page 1 of 1

[ 3 posts ]

Who is online

Users browsing this forum: No registered users and 1 guest

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to: