what is the meaning of "lacks a cast" when compile

[lavender]

when I compile my code, it show :
WARNING : passing `int' to argument 1 of `deleteQueue(it emType *, queue *)' lacks a cast
What is the meaning for this warning?
Where I should coorect in my code?

void Print(queue *q)
{
int j;
if ((q->tail-q->head) >=5) 
{        
 for(j = 0;j < 5 ;j++)
{
printf("\nDokumen %d sedang diproses",q->items[q->head]);
deleteQueue(q->items[q->head],q);
}
}
return;
}
 
 
void deleteQueue(itemType *nItem,queue *q)
{
printf(" Inside deleteQueue -> head : %d\n ", q->head);
q->head = (q->head + 1);
return;
}
 

[DeMan]

Basically, the compiler expects a pointer to itemType to be passed during the function. a pointer is an int, so the compiler recognises that you might deliberately be passing an integer but would like a cast to assure it that you really do intend passing that pointer intend.
A cast is acheived, by preceding the variable (in this case) with
(itemType *)
eg

deleteQueue((itemType *)q->items[q->head],q);
 

if, however, the object at q->items[q->head] is of type itemType (and just happens to be compatible with an integer, you should pass a reference to it
viz:

deleteQueue(&(q->items[q->head]),q);
 

you may like to be sure which of these you want to do, becauswe the one you don't will probably give you interesting side-efefects