Virtual base class C++ Program to print hollow square or rectangle star pattern

Develop a C++ program to print hollow square or rectangle star pattern by using the virtual base class in Object Oriented Programming.

#include<iostream>
using namespace std;
class a
{
	public:
			int n;
};
class b: virtual public a
{
	public:
	int i;
};
class c:virtual public a
{
	public:
	int j;
};
class d:public b,c
{
	public:
		int show_T4Tutorials()
			{
		    	cout<<"enter number";
				cin>>n;	
				for(i=1;i<=n;i++)
				{
					for( j=1;j<=n;j++)
					{
						if(i==1||i==n||j==1||j==n)
						{
							cout<<"*";
						}
						else
						{
							cout<<" ";
						}
					}
					cout<<endl;
				}
			}
};
int main()
{
	d obj;
	obj. show_T4Tutorials ();
}

#include<iostream>

using namespace std;

class a

{

public:

int n;

};

class b: virtual public a

{

public:

int i;

};

class c:virtual public a

{

public:

int j;

};

class d:public b,c

{

public:

int show_T4Tutorials()

{

cout<<"enter number";

cin>>n;

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

{

for( j=1;j<=n;j++)

{

if(i==1||i==n||j==1||j==n)

{

cout<<"*";

}

else

{

cout<<" ";

}

cout<<endl;

}

};

int main()

{

d obj;

obj. show_T4Tutorials ();

}

Output

Write a C++ program to print hollow square or rectangle star pattern by using for loop and multiple inheritance with virtual class in OOP.

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