}//method main
static void show(B305 vb5)
{
Console.WriteLine(vb5.x);
Console.WriteLine(vb5.y);
Console.WriteLine(vb5.getX());
Console.WriteLine(vb5.getY());
Console.WriteLine("---------------");
}
static void Main()
{
B305 vb = new B305();
Console.WriteLine(vb.x);
Console.WriteLine(vb.y);
Console.WriteLine(vb.z);
Console.WriteLine(vb.getX());
Console.WriteLine(vb.getY());
Console.WriteLine(vb.getZ());
Console.WriteLine("--------------");
A305 va = vb;
Console.WriteLine(va.x);
Console.WriteLine(va.y);
//Console.WriteLine(va.z); // class แม่ไม่มี z
Console.WriteLine(va.getX());
Console.WriteLine(va.getY());
//Console.WriteLine(va.getZ()); // class แม่ไม่มี z
Console.WriteLine("--------------");
B305 vb2 = (B305)va;
Console.WriteLine(vb2.x);
Console.WriteLine(vb2.y);
Console.WriteLine(vb2.z);
Console.WriteLine(vb2.getX());
Console.WriteLine(vb2.getY());
Console.WriteLine(vb2.getZ());
Console.WriteLine("--------------");
B305 vb51 = new B305();
B305 vb52 = new B305();
show(vb51);
show(vb52);
Console.ReadKey();
}//method main