iostream problem

[liengen]

Hi
We have a problem with an exersize with Matrices. We're supposed to write the functions to make a given main() function work.

Here's a copy of the main()-function:

main() {
// create two 3x3 matrices
Matrix A(3,3), B(3,3)

cout << "Type in a 3x3 matrix" << endl;
cin >> A;

cout << A;
}

We dont know how to implement cin/cout in our class
Example of Matrix.h:

public:
Matrix(int r, int c);
void operator>> (); // is this possible?
void operator<< () const; // possible?

[jsmith]

friend ostream& operator<<( ostream& os, Matrix& mx );
friend istream& operator>>( istream& os, Matrix& mx );