John Davidson

Message:

I am trying to debug a recursive function used to validate user input and return a value when the input is OK. The function looks like this:

double load_price()

{

    double price;



    Goods * tempGd = new Goods();



    cin >> price;



    while (!cin)

    {

        cin.clear();

#undef max

        std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');

        cout << endl;

        cout << "You didn't enter a number. Do so, please: ";

        cin >> price;

    } // endwhile

    if (!tempGd->set_price(price))

    {

        cout << endl;

        cout << "The price " << red << "must not" << white << " be negative." << endl;

        cout << "Please, insert a new price: ";

        load_price();

    }

    else

    {

        delete tempGd;

        return price;

    }

}

The method set_price() of Goods class looks as follows

bool Goods::set_price(double price)

{

    if (price> 0)

    {

        priceSingle_ = price;

        priceTotal_ = price* amount_;

        return true;

    }

    return false;

}

I tried drawing the problem on a paper but all my diagrams seem to look the way my function already looks like. I think there are some problems with returns, but I do not know where.

Help would be greatly appreciated.

---

My Answer:
>> price;__ if (price < 0) {_ cout << "Price cannot be negative. Please enter a valid price: ";__ load_price();__ } else {_ tempGd->setPrice(price);__ }__ return tempGd->getPrice();_}_I am expecting the function to return the price value when the input is valid. However, when I call the function and check the returned value, it is always 0. What could be causing this issue?