1#include <iostream> 2#include <Eigen/Dense> 3 4using Eigen::MatrixXd; 5 6int main() 7{ 8 MatrixXd m(2,2); 9 m(0,0) = 3; 10 m(1,0) = 2.5; 11 m(0,1) = -1; 12 m(1,1) = m(1,0) + m(0,1); 13 std::cout << m << std::endl; 14} 15