#include<stdio.h>
#include<stdlib.h>
#define ok 1
#define error 0
typedef int Status;
typedef char ElemType;
typedef struct node{
int data;
struct node *prior;
struct node *next;
}Node;
Node * create(Node *L,int i){
int n;
int j=0;
Node *q=L;//保存头结点
while(j<i){
Node *p;
p=(Node *)malloc(sizeof(Node));
printf("请输入结点%d的data:\n",j);
scanf("%d\n",&n);
p->data=n;
p->prior=q;
p->next=NULL;
q->next=p;
q=p;
j++;
}
return L;
}
Status Insert(Node *L,int i,int m){
int j=0;
Node *p=NULL;
while(j<i){
L=L->next;
j++;
}
p=(Node *)malloc(sizeof(Node));
p->data=m;
p->prior=L;
p->next=L->next;
L->next->prior=p;
L->next=p;
return ok;
}
void Traverse(Node *L){
L=L->next;
while(L){
printf("%d ",L->data);
L=L->next;
}
}
void main(){
int m=5;
Node *p=NULL;
Node *L;
L=(Node *)malloc(sizeof(Node));
L->next=NULL;
L->prior=NULL;
p=create(L,m);
Traverse(L);
Insert(L,2,6);
Traverse(L);
}