How to use dynamic array in free pascal

Dynamic arrays can be allocated, expanded, shrinked or deallocated at run time using SetLength procedure.

Example:

var
  MyArray: array of Integer;
  i: Integer;
begin
  SetLength(MyArray, 20);
  for i:= 0 to High(MyArray) do
  MyArray[i]:= Random(20);

  for i:= 0 to High(MyArray) do
  Writeln(MyArray[i]);

  SetLength(MyArray, 0); // Deallocate
end.

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