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Practical-27

Write a cpp program of multilevel inheritance.​

Introduction

Code​

Practical-27.cpp


#include <iostream>

//Defining a class as a Superclass
class SuperClass {
    public:
        //Variable Declaration
        int num;

        //Member Function Declaration
        int getNum()
        {
            return num;
        }
};

//Defining the subclass derived from Superclass
class SubClass : public SuperClass {
    public:
        //Member Function declaration
        int getNum2()
        {
            return num;
        }
};

//Defining the sub-subclass derived from SubClass
class SubSubClass : public SubClass {
    public:
    	//Member Function declaration
        int getNum3()
        {
            return num;
        }
};

void main()
{
    SuperClass mySuperObject;
    SubClass mySubObject;
    SubSubClass mySubSubObject;

    mySuperObject.num = 10;

    //Setting the data of subclass object
    mySubObject.num = 20;

    //Setting the data of subsubclass object
    mySubSubObject.num = 30;

    //Accessing the getNum of SuperClass;
    std::cout << mySuperObject.getNum() << "\n";

    //Accessing the getNum2 of SubClass;
    std::cout << mySubObject.getNum2() << "\n";

    //Accessing the getNum3 of SubSubClass;
    std::cout << mySubSubObject.getNum3() << "\n";

    return 0;
}

Output​

10
20
30