Is it possible to overload global new and global delete operators in C++ for allocation and deallocation of 2d block of memory with given "height" and "width"?
Is it possible to overload new operator for allocating something like 2d array in C++?
Yes.
but can I get some code example?
Example:
std::unique_ptr<int[][10]> arr {new int[n][10]};
with given "height" and "width"?
Only if the inner dimensions are compile time constant. Only the outer dimension may be dynamic.
It is easy to translate between a dynamic single dimensional flat array, and a multi dimensional one.