1 Matrix4i m = Matrix4i::Random(); 2 cout << "Here is the matrix m:" << endl << m << endl; 3 cout << "Here is m.bottomRightCorner<2,2>():" << endl; 4 cout << m.bottomRightCorner<2,2>() << endl; 5 m.bottomRightCorner<2,2>().setZero(); 6 cout << "Now the matrix m is:" << endl << m << endl; 7