Lines Matching full:head
21 q->head = q->tail = NULL;
40 if (q->head == NULL) {
41 q->head = q->tail = newnode;
64 if (q->head == NULL) {
65 q->head = q->tail = newnode;
67 newnode->next = q->head;
68 q->head = newnode;
82 if (q->head == NULL)
85 node = q->head;
86 q->head = q->head->next;
87 if (q->head == NULL)
101 if (q->head == NULL)
104 return q->head->element;
114 p = q->head;
132 p = q->head;
153 p = q->head;
162 q->head = p->next;
163 if (q->head == NULL)
