Error : Expecting ')' before '*' token? I really need help with this.

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January 10th, 2013, 03:51 PM

camelCase

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Error : Expecting ')' before '*' token? I really need help with this.[SOLVED]

After many years of working with other languages, I have decided to bit the bullet and try to learn C. This is my first post on this forum, so Apologies if I have broken any rules or missed any etiquette rules here.

Anyways. I have pasted my code below (Actual code is longer, but I have also tried to compile an exact copy of the code which is shortened to the same as this, and still get the error!

Command used : gcc test.c -o test
Error...

In file included from list.h

list.c:6:27: error: expected ')' before '*' token

Code is pasted below, and I would REALLY appreciate any help I can get.

I have already tried renaming the files, and changinf the ifndef and define names too, just incase they clash with something on my system. Resulted in the same output.

------------------
list.h
------------------

Code:

#ifndef LIST_H
#define LIST_H

#include <stdlib.h>
#include "list.c"
/* Struct for linked list elements. */
typedef struct listElement_
{
    void                        *data;
    struct listElement_         *next;
}listElement;

/* Struct for link-list data structure */
typedef struct linkedList_
{
    int         size;
    int         (*match)(const void *key1, const void *key2);
    void        (*destroy)(void *data);

    /* The two elements below define the two elements
     * which must be known for a standard linked list */
    listElement *head;
    listElement *tail;
}linkedList;

void list_init(linkedList *list, void (*destroy)(void *data));

#endif

-------------
list.c
-------------

Code:

#include <stdlib.h>
#include <string.h>

#include "list.h"

void list_init(linkedList *list, void (*destroy)(void *data))
{
    list->size = 0;
    list->destroy = destroy;
    list->head = NULL;
    list->tail = NULL;

    return;
}

--------------------
test.c
--------------------

Code:

#include <stdio.h>
#include "list.h"


int main()
{
    return 0;
}

January 10th, 2013, 04:02 PM

Scorpions4ever

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You have a missing semicolon in list.h

Code:

void list_init(linkedList *list, void (*destroy)(void *data));

#endif

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January 10th, 2013, 04:08 PM

camelCase

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Quote:

Originally Posted by Scorpions4ever

You have a missing semicolon in list.h

Code:

void list_init(linkedList *list, void (*destroy)(void *data));

#endif

Thanks, but unfortunately that didn't fix it

I have added the ';' to the .h file, and updated the forum post.

Is there anything else that stands out to you there?

Thanks again!

January 10th, 2013, 04:13 PM

ptr2void

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Why are you including list.c in list.h?

c Code:

Original - c Code
#include <stdlib.h> #include "list.c"

#include <stdlib.h>
#include "list.c"

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January 10th, 2013, 04:19 PM

camelCase

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Quote:

Originally Posted by ptr2void

Why are you including list.c in list.h?

c Code:

Original - c Code
#include <stdlib.h> #include "list.c"

#include <stdlib.h>
#include "list.c"

Because, if I don't... and I try to compile, I get a different error :

undefined reference to `list_init'

I know the above file means it can't see the function list_init... and since the main program includes the .h file, I was thinking the .h file needed to include the .c file, in order to see the functionality. no?

January 10th, 2013, 05:38 PM

Scorpions4ever

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I took out the #include "list.c" line out from list.h and it compiled successfully:

Code:

gcc -Wall -o test test.c list.c

Comments on this post

camelCase agrees: Thanks for your help.

January 11th, 2013, 03:04 AM

camelCase

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Quote:

Originally Posted by Scorpions4ever

I took out the #include "list.c" line out from list.h and it compiled successfully:

Code:

gcc -Wall -o test test.c list.c

Thankyou!, I think my issue here may have been that I wasn't adding list.c to my gcc command? Would that be the issue here?

Thanks again

January 11th, 2013, 10:53 AM

dwise1_aol

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Think about it and you can answer your own question.

In order to use a function in list.c, gcc needed to compile list.c and link in its object file. In order to compile list.c, gcc needed to know about list.c. The only way for gcc to know about list.c is for you to tell it. The way that you tell gcc about list.c is to include it in the command that invokes gcc.

When you encounter situations like this, go through a similar thought process to answer your own questions.

Error : Expecting ')' before '*' token? I really need help with this.

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