LINKLIST *head = NULL,*t

LINKLIST *head = NULL,*t
LINKLIST *head = NULL,*t

LINKLIST *head = NULL,*t
LINKLIST *head = NULL, *t
就是
LINKLIST *head = NULL;
LINKLIST *t ;
head总是指向头,不能随便变化,否则,找不到“头”了,
t 是中间变量,要变化的,用完就不要了.