Multilevel inheritance in C++ is a scenario whereby a class is derived from a particular class, which is already derived from another class.
Note: To understand inheritance in C++ click on this shot.
The figure below shows the visual representation of multilevel inheritance in C++:
In the code below, we derive a class son from another class father which is derived from a parent class grandfather :
#include <iostream>using namespace std;// creating a parent classclass Grandfather{ // this is the parent classpublic: // this is the access specifiervoid myfunction() {cout<<"Gramdfather is the parent class. \nFather is derived from the Grandfather. \nAnd Son is derived from Father.";}};// deriving a class from the parent classclass Father: public Grandfather {};// deriving anogther class from the derived class aboveclass Son: public Father {};int main(){Son myobject; // this is an object of the classmyobject.myfunction(); // calling the functionreturn 0;}
Grandfather.public keyword.myfunction class.myfunction function.Father from the parent class Grandfather.Son from the derived class Father.myobject)of the class (Son).(myfunction).