Virtual base class C++ program to find Strong Numbers within a range of numbers

Write a C++ program to find Strong Numbers within a range of numbers by using the virtual base class.

#include<iostream>
using namespace std;
class T4Tutorials_Grand_Class
{
	public :
		int i, n;
};
class parent_1:public virtual T4Tutorials_Grand_Class
{
	public :
		int n1, s1 ;	
};
class parent_2:public virtual T4Tutorials_Grand_Class
{
	public:
		int j, k;
};
class derived:public parent_1 , public parent_2
{
	protected :
		int    en, sn;		
	public :
		int find()
		{
			s1 = 0;
		    long fact;
		    cout << "Find Strong Numbers within an range of numbers:”<<endl;
		    cout << "“<<endl;
		    cout << "Input starting range of number: “<<endl;
		    cin >> sn;
		    cout << "Input ending range of number: “<<endl;
		    cin >> en;
		    cout << "The Strong numbers are: “<<endl;
		    for (k = sn; k <= en; k++) 
		    {
		        n1 = k;
		        s1 = 0;
		        for (j = k; j > 0; j = j / 10) 
		        {
		            fact = 1;
		            for (i = 1; i <= j % 10; i++) 
		            {
		                fact = fact * i;
		            }
		            s1 = s1 + fact;
		        }
		        if (s1 == n1)
		            cout << n1 << "  “<<endl;
		    }
		    cout << endl;
		}
};
int main()
{
	derived a;
	a.find();
}

#include<iostream>

using namespace std;

class T4Tutorials_Grand_Class

{

public :

int i, n;

};

class parent_1:public virtual T4Tutorials_Grand_Class

{

public :

int n1, s1 ;

};

class parent_2:public virtual T4Tutorials_Grand_Class

{

public:

int j, k;

};

class derived:public parent_1 , public parent_2

{

protected :

int en, sn;

public :

int find()

{

s1 = 0;

long fact;

cout << "Find Strong Numbers within an range of numbers:”<<endl;

cout << "“<<endl;

cout << "Input starting range of number: “<<endl;

cin >> sn;

cout << "Input ending range of number: “<<endl;

cin >> en;

cout << "The Strong numbers are: “<<endl;

for (k = sn; k <= en; k++)

{

n1 = k;

s1 = 0;

for (j = k; j > 0; j = j / 10)

{

fact = 1;

for (i = 1; i <= j % 10; i++)

{

fact = fact * i;

}

s1 = s1 + fact;

}

if (s1 == n1)

cout << n1 << " “<<endl;

}

cout << endl;

}

};

int main()

{

derived a;

a.find();

}

Output

Find Strong Numbers within an range of numbers:

Input starting range of number: 1

Input ending range of number: 145

The Strong numbers are: 1 2 145

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