在 xcode 中将数量从数字转换为单词

问题描述

我需要将用户输入的金额转换为单词.例如，1230.30 变成一千二百三十卢比三十派萨.那么，如何转换呢?

I need to convert the user enter amount into words. For example, 1230.30 into one thousand two hundered and thirty rupees thirty paise.So,how to convert it?

推荐答案

public  string NumberToText(int number)
{
    if (number == 0) return "Zero";
    if (number == -2147483648) return "Minus Two Hundred and Fourteen Crore Seventy Four Lakh Eighty Three Thousand Six Hundred and Forty Eight";
    int[] num = new int[4];
    int first = 0;
    int u, h, t;
    System.Text.StringBuilder sb = new System.Text.StringBuilder();
    if (number < 0)
    {
        sb.Append("Minus ");
        number = -number;
    }
    string[] words0 = {"" ,"One ", "Two ", "Three ", "Four ",
    "Five " ,"Six ", "Seven ", "Eight ", "Nine "};
    string[] words1 = {"Ten ", "Eleven ", "Twelve ", "Thirteen ", "Fourteen ",
    "Fifteen ","Sixteen ","Seventeen ","Eighteen ", "Nineteen "};
    string[] words2 = {"Twenty ", "Thirty ", "Forty ", "Fifty ", "Sixty ",
    "Seventy ","Eighty ", "Ninety "};
    string[] words3 = {"Thousand ", "Lakh ","Crore "};
    num[0] = number % 1000; // units
    num[1] = number / 1000;
    num[2] = number / 100000;
    num[1] = num[1] - 100 * num[2]; // thousands
    num[3] = number / 10000000; // crores
    num[2] = num[2] - 100 * num[3]; // lakhs
    for(int i = 3; i > 0 ; i--)
    {
        if (num[i] != 0)
        {
            first = i;
            break;
        }
    }
    for(int i = first ; i >= 0 ; i--)
    {
        if (num[i] == 0) continue;
        u = num[i] % 10; // ones
        t = num[i] / 10;
        h = num[i] / 100; // hundreds
        t = t - 10 * h; // tens
        if (h > 0) sb.Append(words0[h] + "Hundred ");
        if (u > 0 || t > 0)
        {
            if (h > 0 || i == 0) sb.Append("and ");
            if (t == 0)
            sb.Append(words0[u]);
            else if (t == 1)
            sb.Append(words1[u]);
            else
            sb.Append(words2[t-2] + words0[u]);
        }
        if (i != 0) sb.Append(words3[i-1]);
    }
    return sb.ToString().TrimEnd();
}

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