Re: Ahh, arrays, pointers, structures.. *screams*

[Bobby Bailey]

At 04:46 PM 3/12/02 -0800, Cameron Barry wrote:
Hey Everyone,
First off, I'm new to this stuff for the most part, and may sound like a
complete moron, but I'm hoping someone here can help me out.

I'm trying to write some code, and I'm getting this error message:

act_misc.c:800: request for member `name' in something not a structure or
union
act_misc.c:805: request for member `name' in something not a structure or
union
act_misc.c:806: request for member `timer' in something not a structure or
union
act_misc.c:807: request for member `dir' in something not a structure or
union

Here's some of the code:

{
        char * buf;
        char buf2[MAX_STRING_LENGTH];
        int track;

        buf = NULL;
        for ( track = 0; track < 7; track ++)
        {
                buf = ch->in_room->track[track].name;               /* <---
Line 800 */

            if (buf != NULL)
            {
                sprintf(buf2, "Track 1: %s\t\tTimer: %d\tDir %s\n\r",
                ch->in_room->track[track].name,                       /*
<---- Line 805 */
                ch->in_room->track[track].timer,
                dir_name[ch->in_room-.track[track].dir]);
                send_to_char(buf2, ch);
            }

           etc...

In Merc.h:

Under room_index_data, I have defined:

        TRACK_DATA *    track[7];

and in the typedef's:

typedef struct track_data TRACK_DATA;

and in the structs:

struct track_data
{
    char * name;
    int    dir;
    int    timer;
};

And I just don't understand that error message. Any help would
be appreciated.

Thanks!
-Cameron

You are accessing the member incorrectly. The TRACK_DATA in this example is 
a pointer to a structure, and not just a structure. So, you need to access 
it with -> rather than a period.

buf = ch->in_room->track[track].name;               /* <--- Line 800 */

Should be:

buf = ch->in_room->track[track]->name;               /* <--- Line 800 */


--
Bobby "Chil" Bailey
Ye Olde Signatureless Bum