Queue initialization Problems

Queue initialization-general Linux technology-Linux programming and kernel information. For more information, see the following. The error is that the queue is not initialized successfully, that is, the queue is still empty after initQueue. Please take a look at the prawns. Thank you !!!

The Code is as follows:
ATcommand at_struct = {"AT + CPIN? ", 1 };
Int initQueue (sqqueue * q)
{
If (q = (sqqueue *) malloc (sizeof (sqqueue) = NULL) return 0;
Printf ("the size of q % d \ n", sizeof (q ));
Q-> front = 0;
Q-> rear = 0;
Q-> s = 0;
Printf ("% d \ n", q-> front, q-> rear );
Return 1;
}

Int append (sqqueue * q, ATcommand)
{
Printf ("% d \ n", q-> front, q-> rear );
If (q-> rear + 1) % MAXNUM = q-> front) return 0;
Q-> atcommand [q-> rear] =;
Q-> rear = (q-> rear + 1) % MAXNUM;
Return 1;
}

ATcommand delete (sqqueue * q)
{
ATcommand;
If (q-> s = 0) return;
If (q-> front = q-> rear) q-> s = 0;
At = q-> atcommand [q-> front];
Q-> front = (q-> front + 1) % MAXNUM;
Return;
}

Int
Main (int argc, char * argv [])
{
Sqqueue * q_queue = NULL;
G_type_init ();
If (! G_thread_supported ())
G_thread_init (NULL );
ResponseProcess * proc = response_process_new ("/dev/ttyACM0 ");
ResponseMessage * mess;
Int I = 0, j = 0;
Struct timeval timeout;
Timeout. TV _sec = 1;
Timeout. TV _usec = 0;
If (initQueue (q_queue ))
{
Printf ("q_queue is init? % D \ n ", q_queue-> front, q_queue-> rear );
Int k = append (q_queue, at_struct );
}
Printf ("sssssssss222 \ n ");
While (1)
{
If (I % 300 = 0)
{// Struct
Response_process_terminate (proc );
Response_process_restart (proc );
}
If (! Response_process_initial_finish (proc ))
Continue;
Else
{
Response_process_input_command (proc, at_struct.At_cmd );
Select (0, NULL, & timeout );
While (! Response_process_is_empty (proc ))
{
Mess = response_process_get_message (proc );
G_print ("the message is: % s \ n", mess-> data );
G_free (mess );
J ++;
}
I ++;
If (j> 0)
{
Break;
}
}
Usleep (100000 );
}
// G_free (q_queue );
Return 0;
}