class objects C++ program to display pattern like the right angle

Write a program in C++ to make such a pattern like the right angle triangle with a number that will repeat a number in a row using the class objects in object-oriented programming.

#include<iostream>
using namespace std;
class first
{
	protected :
		int i,j,n,r;
	public :
		int pat()
	{
		cout<<"Enter no of rows : ";
		cin>>n;
		for(i=1 ; i<=n ; i++)
		{
			for(j=1 ; j<=i ; j++)
			{
				cout<<i;
			}
			cout<<endl;
		}
	}
};
int main()
{
	first a;
	a.pat();
}

#include<iostream>

using namespace std;

class first

{

protected :

int i,j,n,r;

public :

int pat()

{

cout<<"Enter no of rows : ";

cin>>n;

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

{

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

{

cout<<i;

}

cout<<endl;

}

};

int main()

{

first a;

a.pat();

}

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