How does call by reference work in C++?

Question

Is it merely another variation of pointer (call by address), only better? Or is there a subtle difference?

Answer 1

Both serve same purpose.
Using reference will make alias name. Using pointer will make a new pointer variable which can be reassigned..

Hope this helps, for more details.
https://hackr.io/blog/pass-by-reference-vs-pass-by-pointer
https://www.sololearn.com/discuss/3045056/?ref=app