Multilevel Driver Initialization

#include <iostream>
using namespace std;

// TODO 1: Create CoreDriver class
//         - Constructor prints "Core driver initialized"

class CoreDriver{
    public:
        CoreDriver(){cout << "Core driver initialized" << endl;}
};

// TODO 2: Create CommDriver class
//         - Publicly inherits from CoreDriver
//         - Constructor prints "Comm driver initialized"

class CommDriver: public CoreDriver{
    public:
        CommDriver(){cout << "Comm driver initialized" << endl;}

};

// TODO 3: Create SpiDriver class
//         - Publicly inherits from CommDriver
//         - Constructor takes int speed
//         - Prints "SPI driver initialized"
//         - Stores speed
//         - Function prints "SPI speed <speed>"

class SpiDriver: public CommDriver{

    private:
    int speed;

    public:
        SpiDriver(int s){
            cout << "SPI driver initialized" << endl;
            speed = s;
        }

        void print(){
            cout << "SPI speed "<< speed << endl;
        }

};

int main() {
    int speed;
    cin >> speed;

    // TODO 4: Create SpiDriver object
    SpiDriver spi(speed);
    // TODO 5: Call function to print SPI speed
    spi.print();
    return 0;
}

Solving Approach