1. #include <iostream>
2. using namespace std;
3. class Car {
4.     public: string name,color="White";
5.     Car() {
6.         cout << "Car class\n";
7.     }
8.     void displayColor() {
9.         cout << color << endl;
10.     }
11. };
12. class Volkswagen: public Car {
13.  
14.     public: string color;
15.     Volkswagen(string colorName) {
16.         color = colorName;
17.     }
18.     void displayColor() {
19.         cout << "The color is Volkswagen is: " << color << endl;
20.     };
21. };
22. class Mercedes: public Car {
23.     public: string color;
24.     Mercedes(string colorName) {
25.         color = colorName;
26.     }
27.     void displayColor() {
28.         cout << "The color is Mercedes is: " << color << endl;
29.     }
30. };
31. int main () {
32.     Car c;
33.     c.displayColor();
34.     Volkswagen v = Volkswagen("Red");
35.     Car * ptr1 = & v;
36.     v.displayColor();
37.     v.Car::displayColor();
38.     ptr1 -> displayColor();
39.     Mercedes m = Mercedes("Black");
40.     Car * ptr2 = & m;
41.     m.displayColor();
42.     m.Car::displayColor();
43.     ptr2 -> displayColor();
44.     return 0;
45. } //page180-181