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):speed(s){
        cout << "SPI driver initialized" << endl;
    }
    void print() const {
        cout<<"SPI speed "<<speed<<endl;
    }
};

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

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

Solving Approach