[c++] Reference vs Pointer

1. A pointer can be re-assigned any number of times while a reference cannot be re-assigned after binding.
2. Pointers can point nowhere (NULL), whereas a reference always refers to an object.
3. You can't take the address of a reference like you can with pointers.
4. There's no "reference arithmetic" (but you can take the address of an object pointed by a reference and do pointer arithmetic on it as in &obj + 5).

 

Pointers vs References in C++ - GeeksforGeeks

 

What are the differences between a pointer variable and a reference variable in C++?