How to declare 2d arrays in array class

Question

x[50][40] and y[50][40] are the 2d arrays. I am using array class. How to declare these in array class?

array <array<long double>> x(50,array<long double>(40)),y(50,array<long double>(40));

I have used the above code in my program like the way a vector is declared as in enter link description here But getting errors. Please help.

Answer 1

#include <array>
...
typedef ::std::array< ::std::array< double, 40 >, 50 > t_My2dArray_50_40;