数据结构-双链表的创建

typedef struct Node{
	int number;
	struct Node *pre;
	struct Node *next;
}Node,*NodList;

NodList NodCreat(NodList L){
	int num,x,cart=1;
	L=(Node*)malloc(sizeof(Node));
	L->pre=NULL;
	L->next=NULL;
	scanf("%d",&num);
	scanf("%d",&x);
	L->number=x;
	Node *r;
	r=L;
	for(cart=1;cart<=num;cart++)
	{
		Node *p;
		p=(Node)malloc(sizeof(Node));
		p->pre=NULL;
		p->next=NULL;
		scanf("%d",&x);
		p->number=x;
		
		r->next=p;
		p->pre=r;
		r=r->next;
	}
	return L;
}