#include <iostream>
#include <iomanip>

using namespace std;

long multiply(int i, int j);

int main()
{
    int n1 = 6;
    int n2 = 9;
    long product = multiply(n1, n2);

    cout << "The product of " << n1 << " and " << n2 << " is "
         << product << endl;
}

long multiply(int i, int j)
{
    // Complete as a recursive function.

    return 0;
}