C++ Multilevel Inheritance

* C++ program to demonstrate example of multilevel inheritance.*/

Ref: Kamthane.

#include

using namespace std;

//Base Class : class A
class A
{
    private:
        int a;
    public:
        void get_a(int val_a)
        { 

           a=val_a; 

         }
       
       void disp_a(void)
        {  

           cout << "Value of a: " << a << endl;  

        }
};


class B: public A
{
    private:
        int b;
    public:
        void get_b(int val_a, int val_b)
        {

              //assign value of a by calling function of class A
            get_a(val_a);     
            b=val_b;
        }


        void disp_b(void)
        {
            //display value of a
            disp_a();
            cout << "Value of b: " << b << endl;
        }
};


//Here class C is derived class and B is Base class


class C: public B
{
    private:
        int c;
    public:
        //assign value of a from here
        void get_c(int val_a, int val_b,int val_c)
        {
            /*** Multilevel Inheritance ***/
            //assign value of a, b by calling function of class B and Class A
            //here Class A is inherited on Class B, and Class B in inherited on Class B
            get_b(val_a,val_b);
            c=val_c;
        }
       
        void disp_c(void)
        {


            disp_b(); //display value of a and b using disp_b()

            cout << "Value of c: " << c << endl;
        }
};

int main()
{
    //create object of final class, which is Class C


    C objC;


    objC.get_c(10,20,30);
    objC.disp_c();


    return 0;
}