C++ Program to display the sum of the series using Multilevel inheritance

Write a program in C++ to display the sum of the series using multilevel inheritances.

#include <iostream>
using namespace std;
class T4Tutorials1
{
	public:
		long int num,i;
	};
class T4Tutorials2:public T4Tutorials1
{
	public:
		int sum=0,k=9;
	};
class series3:public T4Tutorials2
	{
		public:
			int function()
			{
				cout<<"input the number of terms";
				cin>>num;
				for(i=1;i<=num;i++)
				{
					sum=sum+k;
					k=k*10+9;
				}
				cout<<"sum of series"<<sum;
			}
		};
		int main()
		{
			series3 obj;
			obj.function();
		}

#include <iostream>

using namespace std;

class T4Tutorials1

{

public:

long int num,i;

};

class T4Tutorials2:public T4Tutorials1

{

public:

int sum=0,k=9;

};

class series3:public T4Tutorials2

{

public:

int function()

{

cout<<"input the number of terms";

cin>>

num;

for(i=1;i<=num;i++)

{

sum=sum+k;

k=k*10+9;

}

cout<<"sum of series"<<sum;

}

};

int main()

{

series3 obj;

obj.function();

}

Output

Please input the number of terms. 7

the sum of the series is 11111103.

Write a program to find the sum of the following series using Multi-level inheritance.
Different series programs in c++ using the Multi-level inheritance.
All series program in C++ using the Multi-level inheritance.

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