单项选择题
A) struct link next B) link*next C) struct next link D) struct link*next
A.8,2,3,4,5,6,7,1 B.5,6,7,8,1,2,3,4 C.1,2,3,4,5,6,7,8 D.8,7,6,5,4,3,2,1