链表：

pHead = （( pStu ) malloc( sizeof( Stu ) )

pHead->pNext = NULL

pTail = pHead

pNew =（( pStu ) malloc( sizeof( Stu ) )

pTail->pNext = pNew

pNew->pNext = NULL

pTail = pNew

栈：

pStack->pTop = ( pNODE ) malloc( sizeof ( NODE ) )

pStack->pButton = pStack->pTop

pNODE pNew = ( pNODE ) malloc( sizeof ( NODE ) )

pNew->date = val

pNew->pNext = pStack->pTop

pStack->pTop = pNew