void deletenews()
{
int i,f=0;
//fpp = fopen_s(&fp, "students.bat", "a+");
fqq = fopen_s(&fq, "tmp.bat", "a+");
if (fpp != 0 && fqq!=0)
{
system("cls");
puts("===================通知================");
puts("| |");
puts("| 系统初始化失败，任意键退出！ |");
puts("| |");
puts("=======================================");
_getch();
exit(-1);
}
displayall();
printf("请输入你想删除的行：");
scanf_s("%d",&i);
while (f != i)
{
fseek(fp, 0, SEEK_SET);
fread(fp, sizeof(student),1,fq);
fwrite(fp, sizeof(student),1,fq);
f++;
}
fclose(fp);
fclose(fq);
remove("students.bat");
rename("tmp.bat","students.bat");
fpp = fopen_s(&fp, "students.bat", "a+"); //重新建立同学信息文件
return;
}
void displayall()
{
int i = 1,j=0;
student stu;
system("cls");
//fpp = fopen_s(&fp, "students.bat", "a+");
fseek(fp, 0, SEEK_SET); //VS2015系统报错的行
if (fread(&stu, sizeof(student), 1, fp) == EOF)
{
system("cls");
puts("===================通知=================");
puts("| |");
puts("| 同学目录展现失败！ |");
puts("| |");
puts("========================================");
exit(-1);
}
printf("编号\t姓名\t学号\t电话号码\tQQ号码\t宿舍号\n");
while (!feof(fp))
{
printf("%d\t",i++);
printf("%s\t", stu.name);
printf("%ld\t", stu.num);
printf("%ld\t", stu.phone);
printf("%ld\t", stu.qqnum);
printf("%d\t", stu.dorm);
printf("\n");
fread(&stu, sizeof(student), 1, fp);
}
return;
}
