void save(struct teacher *head)

{

struct teacher *p1=head;

FILE *fp;

if((fp=fopen("D:teacher_list.dat","r"))==NULL)

{

printf("文件不存在\n");

return ;

}

for(p1;p1!=NULL;p1=p1->next)

{

fprintf(fp,"%d %s %d %d %d %d %d",p1->num,p1->name,p1->zc,p1->status,p1->yfgz,p1->kkgz,p1->sfgz);

}

fclose(fp);

fp=fopen("D:teacher_list.dat","a");

fprintf(fp," 0 0 0 0 0 0 0");

fclose(fp);

printf("文件保存成功\n");

}