Thread: error: storage class specified for parameter

Hi, I am having this compiling error:

queue_linked.h:18: error: storage class specified for parameter âQueueEntryâ
queue_linked.h:21: error: expected specifier-qualifier-list before âQueueEntryâ
queue_linked.h:23: error: storage class specified for parameter âQueueNodeâ
queue_linked.h:26: error: expected specifier-qualifier-list before âQueueNodeâ
queue_linked.h:29: error: storage class specified for parameter âQueueâ
queue_linked.h:31: error: expected â)â before â*â token

Code:

//prevents multiple inclusions of header file
#ifndef QUEUE_L_H
#define QUEUE_L_H

#include <stdio.h>
#include <stdlib.h>
#include "common.h"

#define MAXCHAR 35
#define KEYSIZE 3

typedef struct queueentry{
        char key[KEYSIZE + 1];
}QueueEntry;

typedef struct queuenode {
    QueueEntry info;
    struct queuenode *next;
} QueueNode;

typedef struct queue {
    QueueNode *front;
    QueueNode *rear;
    int size;
} Queue;

void CreateQueue(Queue *q);
Boolean QueueEmtpy(Queue *);
Boolean QueueFull(Queue *);
void Append(QueueEntry, Queue *);
void Serve(QueueEntry *, Queue *);
void AppendNode(QueueNode *, Queue *);
void ServeNode(QueueNode *, Queue *);
int QueueSize(Queue *);
void ClearQueue(Queue *);
void QueueFront(QueueEntry *, Queue *q);
void TraverseQueue(Queue *, void(*)(QueueEntry));

#endif

Any help as always will be greatly appreciated

I'm not sure which lines the line numbers point to, but: is there something hanging off the end of common.h?

Originally Posted by tabstop

I'm not sure which lines the line numbers point to, but: is there something hanging off the end of common.h?

The lines that the line numbers are pointing to are in red.
I don't understand what do you mean by hanging off the end of common.h?
common.h is inside the quotation marks.

Code:

//prevents multiple inclusions of header file
#ifndef QUEUE_L_H
#define QUEUE_L_H

#include <stdio.h>
#include <stdlib.h>
#include "common.h"

#define MAXCHAR 35
#define KEYSIZE 3

typedef struct queueentry
        char key[KEYSIZE + 1];
}QueueEntry;

typedef struct queuenode {
    QueueEntry info;
    struct queuenode *next;
} QueueNode;

typedef struct queue {
    QueueNode *front;
    QueueNode *rear;
    int size;
} Queue;

void CreateQueue(Queue *q);
Boolean QueueEmtpy(Queue *);
Boolean QueueFull(Queue *);
void Append(QueueEntry, Queue *);
void Serve(QueueEntry *, Queue *);
void AppendNode(QueueNode *, Queue *);
void ServeNode(QueueNode *, Queue *);
int QueueSize(Queue *);
void ClearQueue(Queue *);
void QueueFront(QueueEntry *, Queue *q);
void TraverseQueue(Queue *, void(*)(QueueEntry));

#endif

I mean that maybe common.h ends, somehow, with the word "extern" or something, due to a bad cut'n'paste. Then, since the contents of common.h are just slopped at the top of this file, that extern would then be modifying typedef struct queueentry, and that would contribute to this chain of errors that you see.

Originally Posted by tabstop

I mean that maybe common.h ends, somehow, with the word "extern" or something, due to a bad cut'n'paste. Then, since the contents of common.h are just slopped at the top of this file, that extern would then be modifying typedef struct queueentry, and that would contribute to this chain of errors that you see.

Thanks, I'll work on that now and see if it goes away.

I checked common.h. I don't see anything wrong with it. =/

common.h:

Code:

 //#define DEBUG  // turns on debug


// prevents multiple inclusions of header file
#ifndef COMMON_H
#define COMMON_H

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

typedef enum boolean {FALSE, TRUE} Boolean;

 void Error(char *);

 void Warning(char *);

#endif

I can't reproduce the error here. I had forgotten that "typedef" is technically a storage class specifier, so that's what's being complained about. Somehow, the compiler thinks it's looking at a function there.

Is that really your common.h? Why all the includes then? I don't know if you can get away with it with your setup; but try taking it out (copying the enum declaration into your source).

Originally Posted by vart

typedef struct queueentry

should be

Code:

typedef struct queueentry {

Thanks! However, it is still producing the same error. =/

Originally Posted by tabstop

I can't reproduce the error here. I had forgotten that "typedef" is technically a storage class specifier, so that's what's being complained about. Somehow, the compiler thinks it's looking at a function there.

Is that really your common.h? Why all the includes then? I don't know if you can get away with it with your setup; but try taking it out (copying the enum declaration into your source).

It was given.

Originally Posted by vart

You should start with compiling only one header at a time

create c-file like

Code:

#include "queue_linked.h"
int main(void)
{
   return 0;
}

and compile it

then replace queue_linked with each header in your project and see - if each one can be compiled by itself

Thanks! I'll do that now.

when I complie the following:

Code:

#include "genlist.h"

int main(void)
{
        return 0;
}

I get this error:
4: error: expected â;â, â,â or &#226â before â{â token

when I compile this:

Code:

#include "sort.h"

int main(void)
{
        return 0;
}

I get the following error:
In file included from sort.h:9,
from sortt.c:1:
queue_linked.h:20: error: storage class specified for parameter âQueueEntryâ
queue_linked.h:23: error: expected specifier-qualifier-list before âQueueEntryâ
queue_linked.h:25: error: storage class specified for parameter âQueueNodeâ
queue_linked.h:28: error: expected specifier-qualifier-list before âQueueNodeâ
queue_linked.h:31: error: storage class specified for parameter âQueueâ
queue_linked.h:33: error: expected &#226â before â*â token

sort.h:

Code:

#include "common.h"
#include "genlist.h"
#include "queue_linked.h"

#define MAXQUEUEARRAY 28

void RadixSor(List *);
int QueuePosition(char);
void Rethread(List *, Queue);