#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\n",p->num,p->score);
p=p->next;
}while(p!=NULL);
}
struct student *del(struct student *head,long num)
{struct student *p1,*p2;
if(head==NULL)
{printf("\nlist null!\n");
}
p1=head;
while(num!=p1->num&&p1->next!=NULL)
{p2=p1;p1=p1->next;}
if(num==p1->num)
{if(p1==head)head=p1->next;
else p2->next=p1->next;
printf("delete:%ld\n",num);
n=n-1;
}
else printf("%ld not been found!\n",num);
return(head);
}
struct student *insert(struct student *head,struct student *stud)
{struct student *p0,*p1,*p2;
p1=head;
p0=stud;
if(head==NULL)
{head=p0;p0->next=NULL;}
else
{while((p0->num>p1->num)&&(p1->next!=NULL))
{p2=p1;
p1=p1->next;}
if(p0->num<=p1->num)
{if(head==p1) head=p0;
else p2->next=p0;
p0->next=p1;
}
else
{p1->next=p0;p0->next=NULL;}
}
n=n+1;
return(head);
}
main()
{struct student *head,*stu;
long del_num;
printf("input records:\n");
head=creat();
print(head);
printf("\ninput the deleted number:");
scanf("%ld",&del_num);
while(del_num!=0)
{head=del(head,del_num);
print(head);
printf("input the deleted number:");
scanf("%ld",&del_num);
}
printf("\ninput the inserted record:");
stu=(struct student *)malloc(LEN);
scanf("%ld,%f",&stu->num,&stu->score);
while(stu->num!=0)
{head=insert(head,stu);
print(head);
printf("input the insert record:");
stu=(struct student *)malloc(LEN);
scanf("%ld,%f",&stu->num,&stu->score);
}
}


大家帮忙看看，这个程序在我运行的时候，输入99101，99回车后就跳出了，结果提示：scanf:floating point formats not linked,abnormal program termination!!!
请问这是什么问题啊，请大虾帮忙谢谢。

#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 *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)
{
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);
}
struct student *del(struct student *head,long num)
{
struct student *p1,*p2;
if(head == NULL)
{
printf("\nlist null!\n");
}
p1 = head;
while((num != p1->num)&&(p1->next != NULL))
{
p2 = p1;
p1 = p1->next;
}
if(num == p1->num)
{
if(p1 == head)
head = p1->next;
else
p2->next = p1->next;
printf("delete:%ld\n",num);
n = n-1;
}
else
printf("%ld not been found!\n",num);
return(head);
}
struct student *insert(struct student *head,struct student *stud)
{
struct student *p0,*p1,*p2;
p1 = head;
p0 = stud;
if(head == NULL)
{
head = p0;
p0->next = NULL;
}
else
{
while((p0->num>p1->num)&&(p1->next!=NULL))
{
p2 = p1;
p1 = p1->next;}
if(p0->num <= p1->num)
{
if(head == p1) head = p0;
else p2->next = p0;
p0->next = p1;
}
else
{
p1->next = p0;
p0->next = NULL;}
}
n = n+1;
return(head);
}
int main()
{
struct student *head,*stu;
long del_num;
printf("input records:\n");
head = creat();
print(head);
printf("\ninput the deleted number:");
scanf("%ld",&del_num);
while(del_num)
{
head = del(head,del_num);
print(head);
printf("input the deleted number:");
scanf("%ld",&del_num);
}
printf("\ninput the inserted record:");
stu = (struct student *)malloc(LEN);
scanf("%ld,%f",&stu->num,&stu->score);
while(stu->num)
{
head = insert(head,stu);
print(head);
printf("input the insert record:");
stu = (struct student *)malloc(LEN);
scanf("%ld,%f",&stu->num,&stu->score);
}
return 0;
}

楼主大哥的编程风格真好
我乱改的

大哥，你改的我运行了一下还是不行啊，跟原先一样会出现scanf。。。。。
貌似你是加了句return 0;是吗

程序没看
但根据出错提示
好象是数据类型的错误

scanf("%ld,%f",&p1->num,&p1->score);
后面的优先级是不是有问题？
加个括号试试
瞎写的
也没查资料
嘿嘿

struct student
{long num;//看一下该为:char *num;行不行?
float score;
struct student *next;
};

我知道啦，谢谢大家。