c# - 将带小数的数字(货币)转换为单词

Question

我想将带小数点的数字(以货币计)转换成单词

例如:12345.60 --> 一万二千三百四十五美元六十美分

我从 http://www.csharp-tutorials.info/2016/04/convert-numbers-to-words-in-c.html

 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;
    }

它对整数完全没问题，但如果输入双倍...... 显示错误

因为它只接受整数。

我尽我所能，但我无法更改代码来获得我想要的..

Answer 1

问题是您在 double 上使用模数，这(显然)是不允许的。 您必须使用 Math.Floor(number) 浮点前部分的给定代码和浮点后部分的 number - Math.Floor(number)观点。其余的实际上在你的代码示例中给出，只需在 float 之前的部分之后添加 "Dollar" 并在 float 之后的部分之后添加 "cents" 即可。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;
    }