void pushQueue(Queue *q, int value)
{
      Node *newNode = makeNode(value);
      if (q->head == NULL)
      {
            q->head->value = value;
            return;
      }
      while (q->head != NULL)
      {
            q->head = q->head->next;
      }
      q->head->next->value = value;
      return;
}