public void nhap()
{
Console.WriteLine("nhap so l nv"); n = int.Parse(Console.ReadLine());
a = new Nhanvien[n];
for (int i = 0; i < n; i++)
{
a[i] = new Nhanvien();
a[i].nhap();
}
}
public void sapxep()
{
for (int i = 0; i < n; ++i)
{
for (int j = i + 1; i < n; ++j)
{
if (string.Compare(a[i].Hoten, a[j].Hoten) > 0)
{
Nhanvien t = a[i];
a[i] = a[j];
a[j] = t;
}
}
}
}