Object Oriented Concepts Lab

Daffodil International University Faculty of Science & Information Technology Department of Information Technology & Management Final Examination, Summer 2025 Course Code: ITM214; Course Title: Object Oriented Concepts Sections & Teachers: A, MA Base Class: Vehicle • Attributes: o license_plate (protected) o vehicle_type (public) o base_rate (private) • Constructor: Initialize all attributes. • Methods: o displayDetails(): Prints license plate, vehicle type, base rate. o calculateRentalCost() (Method Overloading): ■ If only days is provided -> total = days * base_rate. ■ If both days and discount are provided -> total = (days * base_rate) - discount%. ♦ Derived Class: LuxuryVehicle (inherits from Vehicle) • Additional Attributes: o has_chauffeur (boolean) o luxury_features (list, e.g., "Leather Seats", "Premium Audio") • Constructor: Use constructor chaining for initialization. • Method Overriding: o displayDetails(): Show vehicle details + chauffeur info + luxury features. o calculateRentalCost(days, discount=0): Before applying calculation, add an extra 20% luxury fee to base_rate, then proceed with the overloaded logic. ♦ Task for Students: 1. Create a LuxuryVehicle object with: License Plate: DHA-2025, Base Rate: $80/day, Chauffeur: Yes, Features: ["Leather Seats", "Premium Audio"]. 2. Call displayDetails() to print details. 3. Call calculateRentalCost(5, 10) to compute cost for 5 days with 10% discount.