cpp/C5/P9/c9-10-2.c

#include <stdio.h>
#include <malloc.h>
#define LEN sizeof(struct student)
struct student
  {long 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("%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\n",p->num,p->score);
       p=p->next;
      }while(p!=NULL);
  }

int main()
  {struct student *head   ;
   head=creat();
   print(head);     
   return 0;
  }