[2.0] is operator not being able use

[bnathvbdotnet]

I am trying to use "is" operator and I am getting some compiler error:

The type or namespace name 'xxxStuntPilot' could not be found (are you missing a using directive or an assembly reference?)

code:

class Program
{
static void Main(string[] args)
{
Pilot basamPilot = new Pilot();

StuntPilot xxxStuntPilot = new StuntPilot("Danny");

xxxStuntPilot.HowmanyHoursofFlying(5);

Pilot yyyPilot = xxxStuntPilot;

if (yyyPilot is xxxStuntPilot)
{
Console.WriteLine("They are same");
}
else
{
Console.WriteLine("They are not same");

}