1 #include <Eigen/Dense> 2 #include <iostream> 3 4 using namespace Eigen; 5 using namespace std; 6 main()7int main() 8 { 9 ArrayXXf a(3,3); 10 ArrayXXf b(3,3); 11 a << 1,2,3, 12 4,5,6, 13 7,8,9; 14 b << 1,2,3, 15 1,2,3, 16 1,2,3; 17 18 // Adding two arrays 19 cout << "a + b = " << endl << a + b << endl << endl; 20 21 // Subtracting a scalar from an array 22 cout << "a - 2 = " << endl << a - 2 << endl; 23 } 24