C++ Program to add two numbers using multilevel inheritance

In this program, You will learn how to add two numbers using multilevel inheritance in C++.

---

#include<iostream>
using namespace std;
int main(){
    //Statement
}

Example: How to add two numbers using multilevel inheritance in C++

#include<iostream>
using namespace std;

class First {
public:
   int a, b, s;

   void input() {
       cout << "Enter two numbers:";
       cin >> a>>b;
   }
};

class Second : public First {
public:

   void add() {
       s = a + b;
   }
};

class Third : public Second {
public:

   void display() {
     cout << "Sum is:" << s;
   }
};

int main() {

   Third th;
   th.input();
   th.add();
   th.display();

   return 0;
}

Output:

Enter two numbers:10 20
Sum is:30