#include <stdio.h>
#include <stdlib.h>
int main()
{
      struct Student
      {
       int a;
       struct Student *next;
      }s,*p=NULL,*q=NULL,*head=NULL;
      head=p=&s;
      q=p->next;
     scanf("%d",&p->a);
      while(p->a!=0)
      {q=malloc(sizeof(struct Student));
       p=q;
       q=p->next;
       scanf("%d",&p->a);
      }
       q=NULL;
       p=head;
      while(p->a)
      {
       printf("%d",p->a);
       p=p->next;
  }

}

你这什么 p q head s 的，你自己能弄清楚它们在干什么吗？

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

int main( void )
{
    struct Student
    {
        int a;
        struct Student *next;
    } *head = NULL;

    struct Student** tail = &head;
    for( int val; scanf("%d",&val)==1 && val!=0; )
    {
        (*tail) = malloc( sizeof(struct Student) );
        (*tail)->a = val;
        (*tail)->next = NULL;
        tail = &(*tail)->next;
    }

    for( struct Student* p=head; p; p=p->next )
        printf( "%d ", p->a );
}

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

int main()
{
    struct Student
    {
        int a;
        struct Student *next;
    }s, *p = NULL, *head = NULL;
    head = p = &s;
    scanf("%d", &p->a);
    while (p->a != 0)
    {
        p->next = malloc(sizeof(struct Student));
        p = p->next;
        scanf("%d", &p->a);
    }
    p = head;
    while (p && p->a)
    {
        printf("%d", p->a);
        p = p->next;
    }
}

[此贴子已经被作者于2019-3-22 11:37编辑过]