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冰雨hust

铁虫 (小有名气)

[求助] C语言定义单链表问题

用C语言和C++怎样定义一个单链表啊?求具体的代码啊?
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冰雨hust

铁虫 (小有名气)

#include<stdio.h>
#include<malloc.h>
#define NULL 0
#define LEN sizeof(List)
typedef struct node
{  int data;
    struct node * next;
}List;
int n=0;
List *create(void)
{
    List * head;
    List * p1,* p2;
    p1=(List*)malloc(LEN);
    p2=(List*)malloc(LEN);
    head=NULL;
    puts("请输入要插入链表的数据(输入0结束):\n";
    scanf("%d",&p1->data);
    while(p1->data!=0)
    {
        n++;
        if(n==1)
            head=p1;
        else
            p2->next=p1;
        p2=p1;
        p1=(List*)malloc(LEN);
        scanf("%d",&p1->data);
    }
    free(p1);
    p2->next=NULL;
    return head;
}
其中的create()函数中 p2->next=p1;
        p2=p1;
        p1=(List*)malloc(LEN);
        scanf("%d",&p1->data);这怎么理解啊
2楼2013-09-16 20:45:17
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