美元的阿拉伯数字转换为英文大写的格式
美元的阿拉伯数字转换为英文大写的格式，参考了网上的代码，然后重构整理了一下。
?
123456789 = ONE HUNDRED TWENTY THREE MILLION FOUR HUNDRED FIFTY SIX THOUSAND SEVEN HUNDRED EIGHTY NINE DOLLARS AND NO CENTS123.01 = ONE HUNDRED TWENTY THREE DOLLARS AND ONE CENT0.01 = NO DOLLARS AND ONE CENT0.0 = NO DOLLARS AND NO CENTS-123.71 = NEGATIVE ONE HUNDRED TWENTY THREE DOLLARS AND NEGATIVE SEVENTY ONE CENTS?
