1#include <Eigen/Dense>
2#include <iostream>
3
4using namespace Eigen;
5using namespace std;
6
7int main()
8{
9  ArrayXXf a(2,2);
10  ArrayXXf b(2,2);
11  a << 1,2,
12       3,4;
13  b << 5,6,
14       7,8;
15  cout << "a * b = " << endl << a * b << endl;
16}
17