书上例题无法运行，请大家一起帮忙诊断。谢谢
#include<stdio.h>#include<malloc.h>
#define LEN sizeof(struct student)
struct student
{int num;
float score;
struct student *next;
};
int n;
struct student *creat()
{
struct student *head;
struct student *p1,*p2;
n=0;
p1=p2=(struct student*)malloc(LEN);
scanf("%d,%f",&p1->num,&p1->score);
head=NULL;
while(p1->num!=0)
{n=n+1;
if(n==1)head=p1;
else p2->next=p1;
p2=p1;
p1=(struct student * )malloc(LEN);
scanf("%d,%f",&p1->num,&p1->score);
}
p2->next=NULL;
return(head);
}
void print(struct student *head)
{struct student *p;
printf("\nNow,These%d records are:\n",n);
p=head;
if(head!=NULL)
do
{printf("%1d %f\n",p->num,p->score);
p=p->next;
}while(p!=NULL);
}
void main()
{
struct student *head;
head=creat();
pritn(head);
}
