reverse a linked list

/*
* A NDROID -> NA DROID -> DNA ROID -> RDNA OID -> ORDNA ID -> IORDNA D -> DIORDNA
* temp = head2->next // D
* head2->next = temp->next // A->ROID
* temp->next = head1 // D->NAROID
* head1 = temp; //(DNA)ROID
*/
List* rev_list(List* head)
{
List* head1 = head;
List* head2 = head;

List* temp;
while(head2->next)
{
temp = head2->next;
head2->next = temp->next;
temp->next = head1;
head1 = temp;
//print_list(head1);
}

return head1;
}