NP39 Position of the DisplayFleet() method

Question

September 7 2007 Hi Guys NP39 Position of the DisplayFleet () method I got the following question from the book. In the question 1 st author is talking about DisplayFleet () method then about Main () method and finally again DisplayFleet () method what author is saying she wants DisplayFleet () method both within the Car class and Main () method or only within the Main () method. Please help. Thank you Create a class named Car containing fields that hold a vehicle ID number make model color and value for a Car object. Include appropriate get and set methods for each field. Write a DisplayFleet ( ) method that accepts any number of Car objects displays their values and displays the total value of all Car objects passed to the method. Write a Main ( ) method that declares five Car objects and assigns values to each then calls DisplayFleet ( ) three times—passing three four and five Car objects in successive calls. Save the program as Car.es.

Maha · Answer

Thank you very much for your help Alan

Alan · Answer

OK here we go: using System; public class CarRecords { public static void Main() { Car car1 = new Car(111 Toyota Corolla Black 5000); Car car2 = new Car(222 Morris Minor Red 10000); Car car3 = new Car(333 Morris Oxford White 15000); Car car4 = new Car(444 Ford Mondeo Brown 20000); Car car5 = new Car(555 Mazda MX5 Green 25000); DisplayFleet(car1 car2 car3); DisplayFleet(car1 car2 car3 car4); DisplayFleet(car1 car2 car3 car4 car5); } public static void DisplayFleet(params Car[] carArray) { double sum = 0.0; for (int x = 0; x { Console.Write({0}  carArray[x].Price.ToString(c0)); sum += carArray[x].Price; } Console.WriteLine(
Sum = {0} sum.ToString(c0)); Console.WriteLine(); } } public class Car { int id; string make model color; double price; public Car(int carId string carMake string carModel string carColor double carPrice) { id = carId; make = carMake; model = carModel; color = carColor; price = carPrice; } public int ID { get{ return id;} set{ id = value;} } public string Make { get{ return make;} set{ make = value;} } public string Model { get{ return model;} set{ model = value;} } public string Color { get{ return color;} set{ color = value;} } public double Price { get{ return price;} set{ price = value;} } }

Maha · Answer

Alan please correct the following program. //page229 using System; public class CarRecords { public static void Main () { Car [] carArray = new Car []{ new car(111  Toyota   Corola  Black  5000) new car(222 Morris  Minor  Red  10000) new Car (333 Morris  Oxerd  White  15000)}; //DisplayFleet(12000 4000 6000); //DisplayFleet(7000 8000 9000 3000); DisplayFleet(carArray); } public static void DisplayFleet( Car [] carArray) { int sum = 0; for ( int x = 0; x { carArray[x] = new Car (); Console .Write( {0}   carArray[x].GetPrice().ToString( c0 )); sum = sum + carArray[x]; } Console .WriteLine( 
Sum = {0}  sum.ToString( c0 )); Console .WriteLine(); } } class Car { int idNumber; string make model color; double price; public Car( int id string carMake string carModel string carColor double carPrice) { idNumber = id; make = carMake; model = carModel; color = carColor; price = carPrice; } public int GetID() { return idNumber; } public string GetMake() { return make; } public string GetModel() { return model; } public string GetColor() { return color; } public double GetPrice() { return price; } /* public void SetID(int carId) { idNumber = carId; } public void SetMake(string carMake) { make = carMake; } public void SetModel(string carModel) { model = carModel; } public void SetColor(string carColor) { color = carColor; } public void SetPrice(double carPrice) { price = carPrice; } */ }

Alan · Answer

Well it's not very clear but I'd say they intend you to place the DisplayFleet() method in the same class as your Main() method not in the Car class itself. Having said that why don't you just include both Main() and DisplayFleet() as static methods within the Car class so that you're covered either way ;)