C++ code for Multi Level Inheritance

Here’s a C++ program that shows how a MultiLevel Inheritance actually works with the help of Electronic Device, Phone, and Smartphone

#include <iostream>
using namespace std;
// Base class
class ElectronicDevice {
public:
    void powerOn() {
        cout << "Device ON" << endl;
    }
};
// Derived class (inherits from ElectronicDevice)
class Phone : public ElectronicDevice {
public:
    void call() {
        cout << "Making a call" << endl;
    }
};
// Further derived class (inherits from Phone)
class Smartphone : public Phone {
public:
    void browse() {
        cout << "Browsing internet" << endl;
    }
};
// Main function
int main() {
    Smartphone myPhone;
    // Accessing methods from all levels
    myPhone.powerOn();   // From ElectronicDevice
    myPhone.call();      // From Phone
    myPhone.browse();    // From Smartphone
    return 0;
}

Output:

      Device ON

      Making a call

      Browsing internet

Short Explanation

• ElectronicDevice → Base class with powerOn() method.

• Phone → Inherits from ElectronicDevice, adds call().

• Smartphone → Inherits from Phone, adds browse().

• In main(), object myPhone can use all methods from parent, child, and grandchild classes.

So we can say ,this is Multilevel Inheritance in C++:
ElectronicDevice → Phone → Smartphone

Thanks for reading 💗!

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