请补充函数fun()，该函数的功能是建立一个带头结点的单向链表并输出到文件“out98.dat”和屏幕上，各结点的值为对应的下标，链表的结点数及输出的文件名作为参数传入。注意：部分源程序给出如下。请勿改动主函数main 和其他函数中的任何内容，仪在函数fun()的横线上填入所编写的若干表达式或语句。试题程序：include＜stdio. h＞include＜conio. h＞include＜stdlib. h＞typedef struct ss{int data;struct ss *next;} NODE;void fun(int n,char*filename){NODE *h,*p, *s;FILE *pf;int i;h=p= (NODE *) malloc (sizeof (NODE));h-＞data=0;for (i=1; i {s=(NODE *)malloc (sizeof (NODE));s-＞data=【 】;【 】;p=【 】}p-＞next=NULL;if ( (pf=fopen (filename, "w") ) ==NULL){printf {"Can not open out9B.clat! ");exit (0);}p=h;fprintf (pf, "\n***THE LIST***\n");print f ("\n***THE LIST***\n")while (p){fprintf (pf, "%3d", p-＞data)printf ("%3d",p-＞data);if (p-＞next ! =NULL){fprintf (pf, "-＞");printf ("-＞");}p=p-＞next;}fprintf (pf, "\n");printf ("\n");fclose (pf);p=h;while (p){s=p;p=p-＞next;free (s);}}main(){char * filename="out98. dat";int n;clrscr ();printf (" \nInput n: ");scanf ("%d", n);fun (n, filename);}
请补充函数fun()，该函数的功能是建立一个带头结点的单向链表并输出到文件“out98.dat”和屏幕上，各结点的值为对应的下标，链表的结点数及输出的文件名作为参数传入。
注意：部分源程序给出如下。
请勿改动主函数main 和其他函数中的任何内容，仪在函数fun()的横线上填入所编写的若干表达式或语句。
试题程序：
include＜stdio. h＞
include＜conio. h＞
include＜stdlib. h＞
typedef struct ss
{
int data;
struct ss *next;
} NODE;
void fun(int n,char*filename)
{
NODE *h,*p, *s;
FILE *pf;
int i;
h=p= (NODE *) malloc (sizeof (NODE));
h-＞data=0;
for (i=1; i {
s=(NODE *)malloc (sizeof (NODE));
s-＞data=【 】;
【 】;
p=【 】
}
p-＞next=NULL;
if ( (pf=fopen (filename, "w") ) ==NULL)
{
printf {"Can not open out9B.clat! ");
exit (0);
}
p=h;
fprintf (pf, "\n***THE LIST***\n");
print f ("\n***THE LIST***\n")
while (p)
{
fprintf (pf, "%3d", p-＞data)
printf ("%3d",p-＞data);
if (p-＞next ! =NULL)
{
fprintf (pf, "-＞");
printf ("-＞");
}
p=p-＞next;
}
fprintf (pf, "\n");
printf ("\n");
fclose (pf);
p=h;
while (p)
{
s=p;
p=p-＞next;
free (s);
}
}
main()
{
char * filename="out98. dat";
int n;
clrscr ();
printf (" \nInput n: ");
scanf ("%d", &n);
fun (n, filename);
}