shows all possible boolean outputs for 1 or 2 inputs

    // how to generalize this?? one function for n inputs
    void showOutsFor2(){
        cout << "all possible combinations for two outupts" << endl;
        cout << "A\t|\tB " << endl;
        cout << "---------" << endl;

        for(int i = 0 ; i < 2; i++)
            for(int j = 0; j < 2; j ++)
                cout << i << "\t \t" << j << endl;
    }
    void showOutsFor3(){
        cout << "all possible combinations for three outupts" << endl;
        cout << "A\t|\tB\t|\tC" << endl;
        cout << "------------------" << endl;

        for(int i = 0 ; i < 2; i++)
            for(int j = 0; j < 2; j ++)
                for(int k = 0; k < 2; k++)
                    cout << i << "\t \t" << j << "\t \t" << k << endl;

    }