Copy constructor or = operator?

Question

    class Foo
    {


    };

    Foo f;
    Foo g = f; // (*)

My question is, what is being called in the line marked with (*) ? Is it the default

Answer 1

g is actually created as a copy of f.

A simple way to remember what = actually means, is just answer the question: is g already existing?

{
   Foo g; //g construction ends here (at ';')
   g = f; // assignment (the g previous value is replaced)
}

{
   Foo g = f; //copy (same as Foo g(f): there is no "previous g" here)
}