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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4.  
  5. public abstract class Vehicle
  6. {
  7.     public int ID { get; private set; }
  8.     public string Brand { get; private set; }
  9.     public string Model { get; private set; }
  10.     public bool IsRented { get; private set; }
  11.  
  12.     protected Vehicle(int id, string brand, string model)
  13.     {
  14.         ID = id;
  15.         Brand = brand;
  16.         Model = model;
  17.         IsRented = false;
  18.     }
  19.  
  20.     public void RentVehicle()
  21.     {
  22.         if (!IsRented)
  23.         {
  24.             IsRented = true;
  25.             Console.WriteLine($"Vehicle {ID} has been rented.");
  26.         }
  27.         else
  28.         {
  29.             Console.WriteLine($"Vehicle {ID} is already rented.");
  30.         }
  31.     }
  32.  
  33.     public void ReturnVehicle()
  34.     {
  35.         if (IsRented)
  36.         {
  37.             IsRented = false;
  38.             Console.WriteLine($"Vehicle {ID} has been returned.");
  39.         }
  40.         else
  41.         {
  42.             Console.WriteLine($"Vehicle {ID} is not currently rented.");
  43.         }
  44.     }
  45.  
  46.     public abstract void DisplayInfo();
  47. }
  48.  
  49. public class Car : Vehicle
  50. {
  51.     public int NumberOfDoors { get; private set; }
  52.  
  53.     public Car(int id, string brand, string model, int numberOfDoors)
  54.         : base(id, brand, model)
  55.     {
  56.         NumberOfDoors = numberOfDoors;
  57.     }
  58.  
  59.     public override void DisplayInfo()
  60.     {
  61.         Console.WriteLine($"Car ID: {ID}, Brand: {Brand}, Model: {Model}, Doors: {NumberOfDoors}, Rented: {IsRented}");
  62.     }
  63. }
  64.  
  65. public class Truck : Vehicle
  66. {
  67.     public int LoadCapacity { get; private set; }
  68.  
  69.     public Truck(int id, string brand, string model, int loadCapacity)
  70.         : base(id, brand, model)
  71.     {
  72.         LoadCapacity = loadCapacity;
  73.     }
  74.  
  75.     public override void DisplayInfo()
  76.     {
  77.         Console.WriteLine($"Truck ID: {ID}, Brand: {Brand}, Model: {Model}, Load Capacity: {LoadCapacity}kg, Rented: {IsRented}");
  78.     }
  79. }
  80.  
  81. public class Motorcycle : Vehicle
  82. {
  83.     public bool HasSideCar { get; private set; }
  84.  
  85.     public Motorcycle(int id, string brand, string model, bool hasSideCar)
  86.         : base(id, brand, model)
  87.     {
  88.         HasSideCar = hasSideCar;
  89.     }
  90.  
  91.     public override void DisplayInfo()
  92.     {
  93.         Console.WriteLine($"Motorcycle ID: {ID}, Brand: {Brand}, Model: {Model}, Sidecar: {HasSideCar}, Rented: {IsRented}");
  94.     }
  95. }
  96.  
  97. public static class VehicleUtils
  98. {
  99.     public static double CalculateFine(int daysLate)
  100.     {
  101.         double dailyFine = 50.0; // فرض غرامة يومية
  102.         return daysLate * dailyFine;
  103.     }
  104.  
  105.     public static void DisplayRentalPolicy()
  106.     {
  107.         Console.WriteLine("Rental Policy: Late returns will incur a daily fine of $50.");
  108.     }
  109. }
  110.  
  111. public class VehicleOffice
  112. {
  113.     private List<Vehicle> vehicles = new List<Vehicle>();
  114.  
  115.     public void AddVehicle(Vehicle vehicle)
  116.     {
  117.         vehicles.Add(vehicle);
  118.     }
  119.  
  120.     public void DisplayAllVehicles()
  121.     {
  122.         foreach (var vehicle in vehicles)
  123.         {
  124.             vehicle.DisplayInfo();
  125.         }
  126.     }
  127.  
  128.     public Vehicle SearchVehicleById(int id)
  129.     {
  130.         return vehicles.FirstOrDefault(v => v.ID == id);
  131.     }
  132. }
  133.  
  134. class Program
  135. {
  136.     static void Main(string[] args)
  137.     {
  138.         VehicleOffice office = new VehicleOffice();
  139.  
  140.         // Adding Vehicles
  141.         office.AddVehicle(new Car(1, "Toyota", "Corolla", 4));
  142.         office.AddVehicle(new Truck(2, "Ford", "F-150", 1000));
  143.         office.AddVehicle(new Motorcycle(3, "Harley-Davidson", "Street 750", false));
  144.  
  145.         // Display all vehicles
  146.         Console.WriteLine("All Vehicles:");
  147.         office.DisplayAllVehicles();
  148.  
  149.         // Search for a vehicle and rent it
  150.         Console.WriteLine("\nSearching for Vehicle with ID 1:");
  151.         Vehicle vehicle = office.SearchVehicleById(1);
  152.         if (vehicle != null)
  153.         {
  154.             vehicle.RentVehicle();
  155.             vehicle.DisplayInfo();
  156.  
  157.             // Returning the vehicle
  158.                         vehicle.ReturnVehicle();
  159.             vehicle.DisplayInfo();
  160.         }
  161.         else
  162.         {
  163.             Console.WriteLine("Vehicle not found.");
  164.         }
  165.  
  166.         // Display rental policy
  167.         VehicleUtils.DisplayRentalPolicy();
  168.  
  169.         // Example of calculating fine
  170.         int daysLate = 3; // عدد الأيام المتأخرة
  171.         double fine = VehicleUtils.CalculateFine(daysLate);
  172.         Console.WriteLine($"Total fine for {daysLate} days late: ${fine}");
  173.     }
  174. }
  175.  
Success #stdin #stdout 0.07s 29420KB
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Standard input is empty
stdout
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All Vehicles:
Car ID: 1, Brand: Toyota, Model: Corolla, Doors: 4, Rented: False
Truck ID: 2, Brand: Ford, Model: F-150, Load Capacity: 1000kg, Rented: False
Motorcycle ID: 3, Brand: Harley-Davidson, Model: Street 750, Sidecar: False, Rented: False

Searching for Vehicle with ID 1:
Vehicle 1 has been rented.
Car ID: 1, Brand: Toyota, Model: Corolla, Doors: 4, Rented: True
Vehicle 1 has been returned.
Car ID: 1, Brand: Toyota, Model: Corolla, Doors: 4, Rented: False
Rental Policy: Late returns will incur a daily fine of $50.
Total fine for 3 days late: $150
https://ideone.com/XRe5nz
language:
C# (NET 6.0)
created:
10 days ago
visibility:
public

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