If free() knows the length of my array, why can't I ask for it in my own code?

Question

I know that it\'s a common convention to pass the length of dynamically allocated arrays to functions that manipulate them:

void initializeAndFree(int* anArr         


        

Answer 1

A non-standard way is to use _msize(). Using this function will make your code unportable. Also the documentation is not very clear on wheteher it will return the number passed into malloc() or the real block size (might be greater).