class walledMatrix : public matrix

/*
I'm just playing around with inheritance here.
walledMatrix takes a matrix and lines its "edges" with walls.

edit: changed to support templates
*/
template <class T>
class walledMatrix : public matrix<T>
{
public:
    walledMatrix(int x, int y) : matrix<T>(x, y){ wall(); }
    void wall(){
        for (int i = 0; i < length; i++){
            operator()(i, 0) = 6, operator()(i, width - 1) = 7;
        }
        for (int i = 0; i < width; i++){
            operator()(0, i) = 8, operator()(length - 1, i) = 9;
        }
    }
};
// Sample program:
/*
int _tmain(int argc, _TCHAR* argv[])
{
    int length = 20, width = 20;
    walledMatrix<int> mat(length, width);

    cout << "Sample area:\n";
    for (int c = 0; c < length; c++){
        cout << endl;
        for (int r = 0; r < width; r++)
            cout << (mat(c, r) ? 'X' : '0');
    }
    cout << endl << endl;
    return 0;
}
*/
// sample output:
/*
Sample area:

XXXXXXXXXXXXXXXXXXXX
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
X000000000000000000X
XXXXXXXXXXXXXXXXXXXX

Press any key to continue . . .
*/