Dilemma with "operator overloading"...

[Petike]

Hi all,
let's say we have a class Integer and we want to be able to add some two Integers (our objects) with operator "+" - so we overload the operator in our class:

class Integer
{
public:
    // Operator "+"
    const Integer
    operator+(const Integer& right) const
    {
        return Integer(i + right.i)
    }
private:
    int i;   // Some integer
}

But my question is:
Why the return value in operator+ function is const? Should I understand it, that the return value cannot be ever changed?
(Because in my opinion, from logic sight it doesn't get any meaning)


Thanks.

Petike