C++ program for multilevel inheritance

In this program, we will create a base class student, intermediate class marks, and child class total. So the child class is inheriting data of marks class and marks class inheriting from student class.

Code for c++ program for multilevel inheritance

//c++ program for multilevel inheritance

#include <iostream>
using namespace std;
class student //grandfather class(base)
{

protected:
  int roll_num;

public:
  void get_data(int a)
  {
    roll_num = a;
  }

  void put_data()
  {
    cout << "roll_num =  " << roll_num << endl;
  }
};

class marks : public student // father class(intermediate base)
{

protected:
  int sub1;
  int sub2;

public:
  void get_data(int a, int b)
  {
    sub1 = a;
    sub2 = b;
  }

  void put_data()
  {
    cout << "sub1 =  " << sub1 << endl;
    cout << "sub2 =  " << sub2 << endl;
  }
};

class total : public marks // child class
{
  int sum;

public:
  void get_data(int r, int a, int b)
  {

    student::get_data(r); // inherited from base class
    marks::get_data(a, b); // inheritated from intermediate base class
    sum = a + b;
  }

  void put_data()

  {
    student::put_data();
    marks::put_data();
    cout << "total = " << sum << endl;
  }
};

int main()
{
  total s1;
  s1.get_data(12, 45, 60);
  s1.put_data();
  return 0;
}

Output

roll_num = 12
sub1 = 45
sub2 = 60
total = 105

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