// Here, again, car is passed by value, i.e. only a copy of the
// reference is passed in.
public static void doByValue(Car car)
{
car = new Car();
car.Make = "BMW";
}
// Here, we pass the car by reference. Changes are persistent.
private static void doByRef(ref Car car)
{
car = new Car();
car.Make = "Audi";
}
// Here, car is passed by value. Changes made to it are NOT persistent
private static double getMarketValue(Car car)
{
double carValue = (((double)DateTime.Now.Year - (double)car.Year) / 10) * car.OriginalPrice;
return(carValue);
}