int main() { int x = 5; int& y = x; // declare y as a reference to x y++; // increment y std::cout << x << '\n'; // the value of x is now 6 return 0; }In this example, we declare a reference `y` to an integer variable `x`. We increment `y`, which increments the original variable `x`. Finally, we print the value of `x`, which is now 6. C++ References are a part of the C++ Standard Library and are included in the