static void Main(string[] args)
{
//ex1
var lightbulb = new LightBulb();
var switch1 = new Switch();
Flip flip = switch1.Flip(lightbulb);
flip();
flip();
//ex2
var switch2 = new Switch();
}
public void Flip(LightBulb lightBulb)
{
lightBulb.IsOn = !lightBulb.IsOn;
IsOn = !IsOn;
if (IsOn)
{
Console.WriteLine("The lightbulb switches on.");
}
if (!IsOn)
{
Console.WriteLine("The lightbulb switches off.");
}
}