#include<stdio.h>
#include<stdlib.h>
#define LEN sizeof(struct Student)
struct Student
{
long num; //学号
float score; //成绩
struct Student *next;
};
int n;
struct Student *creat(void)
{
struct Student *head;
struct Student *p1,*p2;
n=0;
p1=p2=(struct Student *)malloc(LEN); //开辟一个新单元
scanf("%ld%f",&p1->num,&p1->score); //输入第一个学生的学号和成绩
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); //开票动态存储区，把起始地址赋给p1
scanf("%ld%f",&p1->num,&p1->score);
}
p2->next=NULL;
return(head);
}
int main()
{
struct Student *pt;
pt=creat();
printf("
num:%ld
score:%5.1f
",pt->num,pt->score);
return 0;
}