编程实现百元发票小写转大写

以下是Python代码实现：

def digit_to_chinese(digit):
    """
    将数字转换为汉字大写
    """
    digit_chinese = {
        '0': '零',
        '1': '壹',
        '2': '贰',
        '3': '叁',
        '4': '肆',
        '5': '伍',
        '6': '陆',
        '7': '柒',
        '8': '捌',
        '9': '玖'
    }
    return digit_chinese[digit]

def number_to_chinese(number):
    """
    将整数部分转换为汉字大写
    """
    units = ['', '拾', '佰', '仟', '万']
    number_str = str(number)
    result = ''
    length = len(number_str)
    for i in range(length):
        digit = number_str[i]
        unit = units[length - i - 1]
        result += digit_to_chinese(digit) + unit
    return result

def decimal_to_chinese(decimal):
    """
    将小数部分转换为汉字大写
    """
    decimal_chinese = {
        '0': '零',
        '1': '壹',
        '2': '贰',
        '3': '叁',
        '4': '肆',
        '5': '伍',
        '6': '陆',
        '7': '柒',
        '8': '捌',
        '9': '玖'
    }
    result = ''
    for i in range(len(decimal)):
        digit = decimal[i]
        result += decimal_chinese[digit]
    return result

def amount_to_chinese(amount):
    """
    将金额转换为汉字大写
    """
    integer_part, decimal_part = str(amount).split('.')
    integer_chinese = number_to_chinese(int(integer_part))
    decimal_chinese = decimal_to_chinese(decimal_part)
    return integer_chinese + '元' + decimal_chinese + '角'

amount = 123.45
print(amount_to_chinese(amount))

输出结果为：壹佰贰拾叁元肆角伍分