operator overloading to another class

Question

How override operator+ in first class to second class. I found more information about this but it does not work. Please help me

virtual Array& operator+(const double b) {
        cout << "Добавление числа 10: ";
        Array& x(*this);
        for (int i = 0; i < size; i++) {

        }
        cout << x << endl;
        return x;
    }

virtual ArrayComplex& operator+(const double b) {
        cout << "Добавление числа 1011111111111: ";
        ArrayComplex& x(*this);
        for (int i = 0; i < size; i++) {
            x[i] += 10;
        }
        cout << x << endl;
        return *this;
    }

What behavior did you notice that makes you think that the function does not work? — R Sahu, Jan 31 '18 at 21:16
It is interesting but i use RTTI. Is it can influence for that? — Владислав Сильченко, Jan 31 '18 at 21:45
I am not sure I understand the problem you are running into. Please post a [mcve]. — R Sahu, Jan 31 '18 at 21:49
Normally the workings of an expression `some_array+b` would actually use the value of `b` somewhere in the `operator+()`. Neither of your definitions use the argument `b`. It is probably better not to have them as virtual functions - the effects may not be what you intend. — Peter, Jan 31 '18 at 21:52
From your ideone code: `prog.cpp:39:2: error: expected ‘}’ at end of input };` Add the close bracket for first class. — AdvSphere, Jan 31 '18 at 22:19

AdvSphere · Answer 1 · 2018-01-31T23:09:36.517

1

The signature of your base class Array& operator+(const double b) does not match the derived ArrayComplex& operator+(const double b) that's why it does not work. Make sure the return types are the same.

edited Jan 31 '18 at 23:09

answered Jan 31 '18 at 22:32

AdvSphere

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Down voted because it's a low quality explaination. What was missing in the users code? What about some general information about the mechasim which You understand, but is incorrectly implemented in the question? – Robert Andrzejuk Jan 31 '18 at 23:01
@RobertAndrzejuk, thank you for the explanation, will remember next time :) – AdvSphere Jan 31 '18 at 23:03
Fix Your answer, and the downvote will be changed to an upvote or none. A downvote costs the giver -1 point. It's there to tell You to fix something. – Robert Andrzejuk Jan 31 '18 at 23:06
But i saw this example https://stackoverflow.com/questions/669818/virtual-assignment-operator-c – Владислав Сильченко Feb 01 '18 at 09:15

operator overloading to another class

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