nested loop one

#include <iostream>

using namespace std;

main()
{
    int a, b;

cout<<"               ________________________________ "<<endl;
cout<<"              |                                |  "<<endl;
cout<<"              |         NESTED LOOP ONE        | "<<endl;
cout<<"              |________________________________| "<<endl;
cout<<"         "<<endl;

    for (a=1; a <= 8; a++){
        for (b=1; b <= a; b++){
            cout << a;
        }

        cout << "\n";
    }
}

/**
1
22
333
4444
55555
666666
7777777
88888888
**/