edit5.c

C语言编程工具 可以快捷 方便的编写程序

void  insert()
{
	llist *p,*s;
	int j,i,x;
	printf("the num:");
	scanf("%d",&i);
	printf("the data:");
     scanf("%d",&x);
	s=(llist *)malloc(sizeof(llist));
	s->data=x;
	if(i==0)
	{
		s->next=head;
		head->pro=s;
		head=s;
	}
	else
	{
		p=head;
		j=1;
		while(p!=NULL&&j<i)
		{
			j++;
			p=p->next;
		}
 	if(p!=NULL)
 	{

 	   if(p->next==NULL)
 	   {
 	   	p->next=s;
 	   	s->next=NULL;
 	   	s->pro=p;
 	   }
 	   else
 	   {
 	   	s->next=p->next;
 	   	p->next->pro=s;
 	   	p->next=s;
 	   	s->pro=p;
 	   }
 	 }
 	 else printf("there is not the node");
 	}