1#include <Eigen/Dense>
2#include <iostream>
3
4using namespace Eigen;
5using namespace std;
6
7int main()
8{
9  ArrayXXf  m(2,2);
10
11  // assign some values coefficient by coefficient
12  m(0,0) = 1.0; m(0,1) = 2.0;
13  m(1,0) = 3.0; m(1,1) = m(0,1) + m(1,0);
14
15  // print values to standard output
16  cout << m << endl << endl;
17
18  // using the comma-initializer is also allowed
19  m << 1.0,2.0,
20       3.0,4.0;
21
22  // print values to standard output
23  cout << m << endl;
24}
25