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std::lconv(3) C++ Standard Libary std::lconv(3) NAME std::lconv - std::lconv Synopsis Defined in header <clocale> struct lconv; The class std::lconv contains numeric and monetary formatting rules as defined by a C locale. Objects of this struct may be obtained with std::locale- conv. The members of std::lconv are values of type char and of type char*. Each char* member except decimal_point may be pointing at a null character (that is, at an empty C-string). The members of type char are all non-negative numbers, any of which may be CHAR_MAX if the corresponding value is not available in the current C locale. Member objects Non-monetary numeric formatting parameters char* decimal_point the character used as the decimal point (public member object) the character used to separate groups of digits before the char* thousands_sep decimal point (public member object) char* grouping a string whose elements indicate the sizes of digit groups (public member object) Monetary numeric formatting parameters char* mon_decimal_point the character used as the decimal point (public member object) the character used to separate groups of digits before the char* mon_thousands_sep decimal point (public member object) char* mon_grouping a string whose elements indicate the sizes of digit groups (public member object) char* positive_sign a string used to indicate non-negative mone- tary quantity (public member object) char* negative_sign a string used to indicate negative monetary quantity (public member object) Local monetary numeric formatting parameters char* currency_symbol the symbol used for currency in the current C locale (public member object) the number of digits after the decimal point to display in a char frac_digits monetary quantity (public member object) 1 if currency_symbol is placed before non-neg- ative value, char p_cs_precedes 0 if after (public member object) 1 if currency_symbol is placed before negative value, 0 char n_cs_precedes if after (public member object) indicates the separation of currency_symbol, positive_sign, char p_sep_by_space and the non-negative monetary value (public member object) indicates the separation of currency_symbol, negative_sign, char n_sep_by_space and the negative monetary value (public member object) indicates the position of positive_sign in a non-negative char p_sign_posn monetary value (public member object) indicates the position of negative_sign in a negative monetary char n_sign_posn value (public member object) International monetary numeric formatting parameters the string used as international currency name in the char* int_curr_symbol current C locale (public member object) the number of digits after the decimal point to display in char int_frac_digits an international monetary quantity (public member object) char int_p_cs_precedes 1 if int_curr_symbol is placed before non- negative (C++11) international monetary value, 0 if after (public member object) char int_n_cs_precedes 1 if int_curr_symboll is placed before nega- tive (C++11) international monetary value, 0 if after (public member object) char int_p_sep_by_space indicates the separation of int_curr_symbol, positive_sign, (C++11) and the non-negative international monetary value (public member object) char int_n_sep_by_space indicates the separation of int_curr_symbol, negative_sign, (C++11) and the negative international monetary value (public member object) char int_p_sign_posn indicates the position of positive_sign in a non-negative (C++11) international monetary value (public member object) char int_n_sign_posn indicates the position of negative_sign in a negative (C++11) international monetary value (public member object) The characters of the C-strings pointed to by grouping and mon_grouping are interpreted according to their numeric values. When the terminating '\0' is encountered, the last value seen is assumed to repeat for the re- mainder of digits. If CHAR_MAX is encountered, no further digits are grouped. the typi- cal grouping of three digits at a time is "\003". The values of p_sep_by_space, n_sep_by_space, int_p_sep_by_space, int_n_sep_by_space are interpreted as follows: 0 no space separates the currency symbol and the value 1 sign sticks to the currency symbol, value is separated by a space 2 sign sticks to the value. Currency symbol is separated by a space The values of p_sign_posn, n_sign_posn, int_p_sign_posn, int_n_sign_posn are interpreted as follows: 0 parentheses around the value and the currency symbol are used to represent the sign 1 sign before the value and the currency symbol 2 sign after the value and the currency symbol 3 sign before the currency symbol 4 sign after the currency symbol Example // Run this code #include <clocale> #include <iostream> int main() { std::setlocale(LC_ALL, "ja_JP.UTF-8"); std::lconv* lc = std::localeconv(); std::cout << "Japanese currency symbol: " << lc->currency_symbol << '(' << lc->int_curr_symbol << ")\n"; } Output: Japanese currency symbol: (JPY ) See also localeconv queries numeric and monetary formatting details of the current locale (function) numpunct defines numeric punctuation rules (class template) defines monetary formatting parameters used by std::money_get and moneypunct std::money_put (class template) http://cppreference.com 2022.07.31 std::lconv(3)
NAME | Synopsis | Member objects | Non-monetary numeric formatting parameters | Monetary numeric formatting parameters | Local monetary numeric formatting parameters | International monetary numeric formatting parameters | Example | Output: | See also
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