#include "stdio.h"
#include "stdlib.h"
#define LEN sizeof(struct student)
#define NUL 0
struct student
{
    char num[5];
    char name[20];
    float score;
    struct student*next;
};
void print(struct student*p)
{
    printf("连表是:\n");
    printf("学号        姓名        成绩\n");
    do
          {printf("%5s%10s%10.2f\n",p->num,p->name,p->score);
           p++;}while(p->next!=NUL);
}

struct student *creat(struct student*p,int n)
{
    struct student *p1,*p2;
    int N=1;
    if(n==0)
    p=NUL;
    else
    {p1=p;
    do
     {printf("第%d个学生:\n",N);
      printf("学号:");
      scanf("%s",&p1->num);
      printf("姓名:");
      scanf("%s",&p1->name);
      printf("成绩:");
      scanf("%f",&p1->score);
      if(n==1)
         p->next=NUL;
      else
        {p2=p1;
         p1=(struct student*)malloc(LEN);
         p2->next=p1;}
      N++;} while(N<=n);
     if(n!=1)
      p2->next=NUL;}
     return(p);
}         
main()
{
    
    struct student *pa,a;
    int na;
    pa=&a;
    printf("链表结点数:");
        scanf("%d",&na);
        pa=creat(pa,na);
        print(pa);
}

[[italic] 本帖最后由 llp108 于 2008-1-6 17:18 编辑 [/italic]]

偶 明白了 谢谢