将带小数的数字（货币）转换为单词

Question

我想将带小数的数字（以货币表示）转换为单词

例如：12345.60-> 123,450美元和60美分

我从http://www.csharp-tutorials.info/2016/04/convert-numbers-to-words-in-c.html中获得了此代码

 public static string NumberToWords(int number)
    {
        if (number == 0)
            return "zero";

        if (number < 0)
            return "minus " + NumberToWords(Math.Abs(number));

        string words = "";

        if ((number / 1000000000) > 0)
        {
            words += NumberToWords(number / 1000000000) + " billion ";
            number %= 1000000000;
        }

        if ((number / 1000000) > 0)
        {
            words += NumberToWords(number / 1000000) + " million ";
            number %= 1000000;
        }

        if ((number / 1000) > 0)
        {
            words += NumberToWords(number / 1000) + " thousand ";
            number %= 1000;
        }

        if ((number / 100) > 0)
        {
            words += NumberToWords(number / 100) + " hundred ";
            number %= 100;
        }

        if (number > 0)
        {
            if (words != "")
                words += " ";

            var unitsMap = new[] { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };
            var tensMap = new[] { "zero", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety" };

            if (number < 20)
                words += unitsMap[number];
            else
            {
                words += tensMap[number / 10];
                if ((number % 10) > 0)
                    words += "-" + unitsMap[number % 10];
            }
        }

        return words;
    }

它可以与整数完全正常工作，但是如果输入double ..则会显示错误

因为它只接受int。

我尽我所能尽力而为，但我无法更改代码以得到我想要的。

Answer 1

问题是您在双打上使用了模，这是（显然）不允许的。您必须Math.Floor(number)将给定代码用于浮点之前number - Math.Floor(number)的部分和浮点之后的部分。其余的实际上是在您的代码示例中给出的，仅"Dollar"在浮点之前"cents"的部分之后和浮点之后的部分之后添加。您的代码看起来像这样：

    public static string NumberToWords(double doubleNumber)
    {
        var beforeFloatingPoint = (int) Math.Floor(doubleNumber);
        var beforeFloatingPointWord = $"{NumberToWords(beforeFloatingPoint)} dollars";
        var afterFloatingPointWord =
            $"{SmallNumberToWord((int) ((doubleNumber - beforeFloatingPoint) * 100), "")} cents";
        return $"{beforeFloatingPointWord} and {afterFloatingPointWord}";
    }

    private static string NumberToWords(int number)
    {
        if (number == 0)
            return "zero";

        if (number < 0)
            return "minus " + NumberToWords(Math.Abs(number));

        var words = "";

        if (number / 1000000000 > 0)
        {
            words += NumberToWords(number / 1000000000) + " billion ";
            number %= 1000000000;
        }

        if (number / 1000000 > 0)
        {
            words += NumberToWords(number / 1000000) + " million ";
            number %= 1000000;
        }

        if (number / 1000 > 0)
        {
            words += NumberToWords(number / 1000) + " thousand ";
            number %= 1000;
        }

        if (number / 100 > 0)
        {
            words += NumberToWords(number / 100) + " hundred ";
            number %= 100;
        }

        words = SmallNumberToWord(number, words);

        return words;
    }

    private static string SmallNumberToWord(int number, string words)
    {
        if (number <= 0) return words;
        if (words != "")
            words += " ";

        var unitsMap = new[] { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };
        var tensMap = new[] { "zero", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety" };

        if (number < 20)
            words += unitsMap[number];
        else
        {
            words += tensMap[number / 10];
            if ((number % 10) > 0)
                words += "-" + unitsMap[number % 10];
        }
        return words;
    }