如题，是书上的例子，运行不动！




#include <malloc.h>
#define NULL 0
#define LEN sizeof(struct student)
struct student
{long num;
 float score;
struct student *next;
};
int n;


struct student *creat(void)  
{struct student *head;
 struct student *p1,*p2;
n=0;
p1=p2=(struct student *)malloc(LEN);
scanf("%ld,%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("%ld,%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("%ld %5.1f",p->num,p->score);
p=p->next;
}while(p!=NULL);
}
main()
{struct student *head,stu;
printf("\ninput records:");
head=creat();
print(head);
getch();
}

还是不能运行啊？难道是我的软件的问题，郁闷&