致命错误：在搜索预编译头文件时遇到意外的文件结尾的指令。错误在哪儿 啊？大神们

Question

#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) /*建立链表*/
{
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 ,&p2->score);
}
p2->next=NULL;
return(head);
}
void print(struct student *head) /*输出链表*/
{
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) /*删除结点*/
{
struct student *p1,*p2;
if(head==NULL)
{
printf("\nlist null! \n");
return head;
}
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) /*插入结点*/
{
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);
}
}
void main()/*主函数*/
{
struct student *head,stu;
long del_num;
printf("input records:\n");
head=creat();/*建立链表返回头指针*/
print(head);/*输出全部节点*/
printf("\ninput the deleted number:");
sxanf("%ld",&del_num);/*输入要删除的学号*/
head=del(head,del_num);/*删除后链表的头地址*/
print(head);/*输出全部结点*/
printf("\ninput the inserted record:");/*输入要插入的结点*/
scanf("%ld,%f",&stu.num ,&stu.score);
head=insert(head,&stu);/*插入一个结点，返回头结点地址*/
print(head);/*输出全部结点*/
}

Answer 1

4个错误
0.NULL不需要你来define
1.printf('delete:%ld\n",num); //左边用了单引号
2.while(num!p1->num&&p1->next==NULL); //应该是num != p1->num
3.sxanf("%ld",&del_num);/*输入要删除的学号*/ // 是scanf
另外
main函数最好声明为int型,这是标准C对main函数的要求
声明为void的main函数在标准C编译器上是通不过编译的

追问

但是调试运行的时候，输入89回车就成这样了呢？

追答

我给你找的是4个编译错误,

你这个是运行时错误啊,也就是常说的runtime error,这种错误只有靠你自己一行行地检查代码了,因为别人读你的代码真的很不好读,

看情况应该是内存没有管理好,我可以给你提几个查错方向

   0.检查是不是数组越界了

对于某一个指针,你在使用它之前是否给它赋值了呢?

对于已经赋值的指针,你是不是给它所指向的元素分配空间了呢?

应该就是以上三个方向了,自己找找吧,

编程 = debug,

Answer 2

printf('delete:%ld\n",num); ==> printf("delete:%ld\n",num);