Is it possible to add rows to a 2D dynamic array after it has been declared?

Question

C++ / C#

C++, declared din. 2-dimensional array with coordinates of points and values. functions in them (x, y, f). If a new dot appears - can I add another line?

Answer 1

struct Point {
float x, y, f;
}

std::vector<Point> points;

Answer 2

No, you can’t, you need to re-allocate the array of the required size, copy it from the old one, delete the old one, add the necessary records.
Or use stl containers.

Answer 3

If it's a simple array, then no.

Answer 4

ArrIn = new float*[pointsIn];                               //строк в массиве
for (int i=0; i<pointsIn; i++) ArrIn[i] = new float[3];     //три столбца