std::moneypunct

STD：货币量

Defined in header
template< class CharT, bool International = false > class moneypunct;

面std::moneypunct封装货币价值格式首选项。流I/O机械手std::get_money和std::put_money使用std::moneypunct透std::money_get和std::money_put用于解析货币价值输入和格式化货币价值输出。

二次

继承图

标准库提供了四个独立的%28区域设置无关%29的专门化：

在标头中定义<locale>

*。

STD：货币量<char>提供“C”区域设置首选项的等效项。

STD：：货币量<wchar[医]T>提供“C”区域设置首选项的宽字符等价物

货币化：货币化<char，true>提供与“C”地区偏好相当的国际货币符号

STD：：货币量<wchar[医]T，true>提供了与“C”区域设置首选项的宽字符等效项，并带有国际货币符号。

此外，在C++程序中构造的每个locale对象都实现了自己的%28 locale特定于这些专门化的%29版本。

Member type	Definition
char_type	CharT
string_type	std::basic_string<CharT>

(constructor)	constructs a new moneypunct facet (public member function)
(destructor)	destructs a moneypunct facet (protected member function)
decimal_point	invokes do_decimal_point (public member function)
thousands_sep	invokes do_thousands_sep (public member function)
grouping	invokes do_grouping (public member function)
curr_symbol	invokes do_curr_symbol (public member function)
positive_signnegative_sign	invokes do_positive_sign or do_negative_sign (public member function)
frac_digits	invokes do_frac_digits (public member function)
pos_formatneg_format	invokes do_pos_format/do_neg_format (public member function)

do_decimal_point virtual	provides the character to use as decimal point (virtual protected member function)
do_thousands_sep virtual	provides the character to use as thousands separator (virtual protected member function)
do_grouping virtual	provides the numbers of digits between each pair of thousands separators (virtual protected member function)
do_curr_symbol virtual	provides the string to use as the currency identifier (virtual protected member function)
do_positive_signdo_negative_sign virtual	provides the string to indicate a positive or negative value (virtual protected member function)
do_frac_digits virtual	provides the number of digits to display after the decimal point (virtual protected member function)
do_pos_formatdo_neg_format virtual	provides the formatting pattern for currency values (virtual protected member function)

Member	Definition
const bool intl (static)	International

static std::locale::id id	id of the locale (public member object)

Member type	Definition
enum part { none, space, symbol, sign, value };	unscoped enumeration type
struct pattern { char field4; };	the monetary format type

Enumeration constant	Definition
none	whitespace is permitted but not required except in the last position, where whitespace is not permitted
space	one or more whitespace characters are required
symbol	the sequence of characters returned by moneypunct::curr_symbol is required
sign	the first of the characters returned by moneypunct::positive_sign or moneypunct::negative_sign is required
value	the absolute numeric monetary value is required

money_base	defines monetary formatting patterns (class)
moneypunct_byname	represents the system-supplied std::moneypunct for the named locale (class template)
money_get	parses and constructs a monetary value from an input character sequence (class template)
money_put	formats a monetary value for output as a character sequence (class template)

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