scanf函数的问题
#include "stdio.h"#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 *p1,*p2,*head;
n=0;
p1=p2=(struct student *)malloc(Len);
scanf("%ld,%f",&p1->num,&p1->score);//scanf 得到的值只赋给p1->num,什么原因？
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;
p=head;
if(head!=NULL)
do
{printf("a=%ld,b=%f",p->num,p->score);
p=p->next;
}while(p!=NULL);
}
main()
{struct student *a;
a=creat();
print(a);
}
