Path: csiph.com!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!border3.nntp.dca.giganews.com!Xl.tags.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local2.nntp.dca.giganews.com!nntp.earthlink.com!news.earthlink.com.POSTED!not-for-mail
NNTP-Posting-Date: Sat, 09 Jun 2012 05:49:19 -0500
Message-ID: <4FD32A2F.1A9E@mindspring.com>
Date: Sat, 09 Jun 2012 06:49:19 -0400
From: pete <pfiland@mindspring.com>
Reply-To: pfiland@mindspring.com
Organization: PF
X-Mailer: Mozilla 3.04Gold (WinNT; I)
MIME-Version: 1.0
Newsgroups: comp.lang.c
Subject: Re: linked list
References: <bc9a4156-754e-4251-bfab-d75241dad420@googlegroups.com>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Lines: 81
X-Usenet-Provider: http://www.giganews.com
NNTP-Posting-Host: 4.154.219.136
X-Trace: sv3-KfvYm7tX+hUL2cJCsEiQSu4b5h3IpIDurPy797d6WodryfwWVFTD+Bvd2O+ORv5yv17+V7irv9A5x5f!SVuggclJN4ciANRhkwzuH6aKLhcchSR72IqObTOgf6Uw//qAi6Wr21debV0kRPwDsfhglg2vrGwP!sd96lpzRRgU=
X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers
X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly
X-Postfilter: 1.3.40
X-Original-Bytes: 2798
Xref: csiph.com comp.lang.c:22057

Zhang Yuan wrote:
> 
> ----------------------------------------------------------------------------
> #include<stdio.h>
> #include<stdlib.h>
> struct stu{
>     int num;
>     char name[12];
>     int age[0];
>     struct stu *next;
>     };
> 
> int main(){
> 
> struct stu *curr,*head;
> 
> head=(stu *)malloc(sizeof(stu));
> curr=head;
> scanf("%d",&(head->num));
> curr->next=NULL;
> 
> while(curr->num!=0){
>         scanf("%s%d",curr->name,curr->age);
>         curr=(stu *)malloc(sizeof(struct stu));
>         scanf("%d",&(curr->num));
>         curr->next=NULL;
> }
> return 0;
> }
> 
> --------------------------------------------------------------------------
> it  doesn't work.When I debug:
> 
> input :
> 101 zhang 19
> 
> the memory information:4 pictures
> http://flic.kr/p/ccMQey
> 
> why 0x6f17e0 change from 00-->13 unexpectedly.
> I think the "*next" and "int age"storaged in different place.
> but it looks like it overwrite?

#include <stdio.h>
#include <stdlib.h>

struct stu{
    struct stu *next;
    int num;
    char name[12];
    int age;
    };

int 
main(void)
{
    struct stu *curr,*head;
    
    head = malloc(sizeof *head);
    if (head != NULL) {
        curr = head;
        puts("enter number");
        scanf("%d", &(head -> num));
        curr -> next = NULL;
        while(curr -> num != 0){
            puts("enter name and age");
            scanf("%s%d", curr -> name, &(curr -> age));
            curr = malloc(sizeof *curr);
            if (curr == NULL) {
                break;
            }
            puts("enter number");
            scanf("%d", &(curr -> num));
            curr -> next = NULL;
        }
    }
    return 0;
}

-- 
pete