address operations

Code example

Discussion: Getting the difference between two memory addresses

• Note: Pointer difference is of type ptrdiff_t. Casting it to int may get one into trouble.
• Check your code sample. But overall, for T* a and T* b, (b - a) equal to number of T in between b and a. So if a and b are next to each other, the result will be 1, not sizeof(T) (bytes)!