Differentiate between a pointer and a reference with respect to C++.

A pointer can be reassigned n number of times while a reference cannot be re-assigned after binding. Pointers can point nowhere or to a NULL value, whereas a reference always refers to an object. The users cannot take the address of a reference like they can with pointers.

There’s no “reference arithmetic” but the user can take the address of an object pointed by a reference and perform pointer arithmetic on it.