What is the difference between references and normal variable handles in C++?

Question

If C++, if I write:

int i = 0;
int& r = i;

then are i and r exactly equivalent?

Answer 1

The syntax int &r=i; creates another name i.e. r for variable i.hence we say that r is reference to i.if you access value of r,then r=0.Remember Reference is moreover a direct connection as its just another name for same memory location.