public class Product {
public string make = "Ford";
public string model = "T";
public string color; // default value of null
public int yearBuilt = 1910;
public void Start() {
System.Console.WriteLine(model + " started");
}
public void Stop() {
System.Console.WriteLine(model + " stopped");
}
}
class MainClass {
public static void Main() {
Product myProduct = new Product();
System.Console.WriteLine("myProduct.make = " + myProduct.make);
System.Console.WriteLine("myProduct.model = " + myProduct.model);
if (myProduct.color == null) {
System.Console.WriteLine("myProduct.color is null");
}
System.Console.WriteLine("myProduct.yearBuilt = " + myProduct.yearBuilt);
}
}