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