You are given a base class Vehicle with a protected int speed and a virtual function describe().

An intermediate class Car has been partially provided: it inherits from Vehicle and adds a protected int doors member.

Your tasks:
1. Implement the Car constructor (takes speed and doors, calls Vehicle base constructor)
2. Create a class SportsCar that inherits from Car
   - Has a private bool turbo member
   - Has a constructor taking speed, doors, and turbo
   - Overrides describe() to print:
     Speed: [speed]
     Doors: [doors]
     Turbo: [yes/no]

Do NOT include a main function. Your code will be tested automatically.

Expected output:
Speed: 200
Doors: 2
Turbo: yes