调试链表函数

//打印单向链表函数void PrintLink(ElemSN *h){    ElemSN *p = NULL;    for (p = h; p; p = p->next)    {        printf("%5d",p->data);    }    printf("\n");}//释放单向链表函数void FreeLink(ElemSN* h){    ElemSN *p=h,*q=NULL;    while (p)    {        q = p;        p = p->next;        free(q);    }}