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{
    int internal_speed;
    public:
        SpiDriver(int speed){
            cout<<"SPI driver initialized"<<endl;
            internal_speed = speed;
        }
        void print(){cout<<"SPI speed "<<internal_speed;}
};
int main() {
    int speed;
    cin >> speed;

    // TODO 4: Create SpiDriver object
    // TODO 5: Call function to print SPI speed
    SpiDriver spi_obj(speed);
    spi_obj.print();

    return 0;
}

Solving Approach