A、p->next=s; s->next=p;
B、s->next=p->next; p->next=s;
C、s->next=p->next; p=s;
D、s->next=p; p->next=s;
喵查答案:s->next=p->next; p->next=s;
A、p->next=s; s->next=p;
B、s->next=p->next; p->next=s;
C、s->next=p->next; p=s;
D、s->next=p; p->next=s;
喵查答案:s->next=p->next; p->next=s;