Declaring a operator+ function in C++ [closed]

Question

I have a class Samp. In Samp.cpp, I can define/declare a function like

 Samp& operator+(Samp& other) {
  std::cout << "something";
  return other;
}

What is this function exactly? How do I call it?

Answer 1

This is actually a unary +, you call it like this:

Samp s;
+s; // <-- here