C++ delete - It deletes my objects but I can still access the data?

Question

I have written a simple, working tetris game with each block as an instance of a class singleblock.

class SingleBlock
{
    public:
    SingleBlock(int, int)         


        

Answer 1

After deleting an object it's not defined what will happen to the contents of the memory that it occupied. It does mean that that memory is free to be re-used, but the implementation doesn't have to overwrite the data that was there originally and it doesn't have to reuse the memory immediately.

You shouldn't access the memory after the object is gone but it shouldn't be surpising that some data remains in tact there.