void insert()//课程信息录入
{
int mai_n(); 
FILE *fp;
struct course c;
int count;
int i;
if((fp=fopen("course.txt","a+"))==NULL)
{
printf("cannot open file\n");
}
printf("\n 请输入课程门数:\n");
scanf("%d",&count);
printf("课程编号 课程名称 课程性质(公共课/必修课) 总学时 授课学时 实验或上机学时 学分 开课学期(年份):\n");
for(i=0;i<count;i++)
{
scanf("%d %s %s %d %d %d %d %d",&c.num,&c.name,&c.kind,&c.time,&c.ttime,&c.etime,&c.mark,&c.term);
fprintf(fp,"%d %s %s %d %d %d %d %d\n",c.num,c.name,c.kind,c.time,c.ttime,c.etime,c.mark,c.term);
}
fclose(fp);
printf("已保存！");
system("pause");
system("cls");//清屏
mai_n();
}