递归函数不返回指定值 [英] Recursive function does not return specified value

问题描述

我试图调试用于验证用户输入的递归函数，并在输入正确时返回值。该函数如下所示：

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;
    }
}

方法set_price / strong>类如下

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;
}

我试图在纸上绘制问题，但我的所有图表似乎看起来方式我的功能已经看起来像。我认为返回有一些问题，但我不知道在哪里。

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.

帮助将非常感激。

推荐答案

您没有使用递归调用的返回值。您需要：

You're not using the return value of the recursive call. You need to do:

return load_price();

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