public static TRALOI KhoiTao(BIEUTHUC P, Random t)
{
TRALOI kq;
kq.NoiDung = "";
long k = XuLyBieuThuc.TinhToan(P) + t.Next() % 100;
kq.NoiDung = k.ToString();
return(kq);
}
public static CAUHOI KhoiTao(BIEUTHUC P, Random t)
{
CAUHOI kq;
kq.NoiDung = XuLyBieuThuc.XuatChuoi(P);
kq.TraLoi = new TRALOI[n_traloi];
for (int i = 0; i < n_traloi; i++)
{
kq.TraLoi[i] = XuLyTraLoi.KhoiTao(P, t);
}
kq.TraLoi[t.Next() % n_traloi].NoiDung = XuLyBieuThuc.TinhToan(P).ToString();
return(kq);
}
public static long TraLoiCauHoi(CAUHOI P)
{
Boolean flag = true;
BIEUTHUC Q = XuLyBieuThuc.KhoiTao(P.NoiDung);
long t = XuLyBieuThuc.TinhToan(Q);
for (int i = 0; i < P.TraLoi.Length; i++)
{
if (t == long.Parse(P.TraLoi[i].NoiDung))
{
return(i + 1);
}
}
return(-1);
}
static void Main(string[] args)
{
BIEUTHUC[] NoiDung;
CAUHOI[] De;
NoiDung = XuLyBieuThuc.Nhap("Nhap vao noi dung cac cau hoi:\n");
De = new CAUHOI[NoiDung.Length];
String Chuoi = "";
Random t = new Random();
for (int i = 0; i < NoiDung.Length; i++)
{
De[i] = XuLyCauHoi.KhoiTao(NoiDung[i], t);
Chuoi = Chuoi + XuLyCauHoi.XuatChuoi(De[i]);
if (i < NoiDung.Length - 1)
{
Chuoi += "\r\n";
}
}
XuLyTapTin.Ghi("DeThiTracNghiem.txt", Chuoi);
XuLyChuoi.Xuat(Chuoi);
}