Let's say we have a 'Vec' class that it is defined using the vector class. Also, let's assume i have overloaded the function operator, so that i can do the following:
a(0) = 1;
a(1) = 4;
... and so on.
what the operator () returns is just this:
where 'i' is the index 0,1,...... and  is because the object of the class is a vector object.
Having say that, i would like to obtain the address of the first element in the object of the class 'Vec' as I would do it in the vector class, that is: &v(0), where v is an object of the vector class: vector<double> v(2)
Can I do the same with a? that is: &a(0)
I have read that overloading the operator & is not a good idea, how can i do the same in other way?