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lconv

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< c‎ | locale
Defined in header <locale.h>
struct lconv;

The struct lconv contains numeric and monetary formatting rules as defined by a C locale. Objects of this struct may be obtained with localeconv . The members of 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.

Contents

[edit] Member objects

[edit] Non-monetary numeric formatting parameters

char* decimal_point
the character used as the decimal point
(public member object)
char* thousands_sep
the character used to separate groups of digits before the decimal point
(public member object)
char* grouping
a string whose elements indicate the sizes of digit groups
(public member object)

[edit] Monetary numeric formatting parameters

char* mon_decimal_point
the character used as the decimal point
(public member object)
char* mon_thousands_sep
the character used to separate groups of digits before the 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 monetary quantity
(public member object)
char* negative_sign
a string used to indicate negative monetary quantity
(public member object)

[edit] Local monetary numeric formatting parameters

char* currency_symbol
the symbol used for currency in the current C locale
(public member object)
char frac_digits
the number of digits after the decimal point to display in a monetary quantity
(public member object)
char p_cs_precedes
1 if currency_symbol is placed before non-negative value, ​0​ if after
(public member object)
char n_cs_precedes
1 if currency_symbol is placed before negative value, ​0​ if after
(public member object)
char p_sep_by_space
indicates the separation of currency_symbol, positive_sign, and the non-negative monetary value
(public member object)
char n_sep_by_space
indicates the separation of currency_symbol, negative_sign, and the negative monetary value
(public member object)
char p_sign_posn
indicates the position of positive_sign in a non-negative monetary value
(public member object)
char n_sign_posn
indicates the position of negative_sign in a negative monetary value
(public member object)

[edit] International monetary numeric formatting parameters

char* int_curr_symbol
the string used as international currency name in the current C locale
(public member object)
char int_frac_digits
the number of digits after the decimal point to display in an international monetary quantity
(public member object)
char int_p_cs_precedes
(C99)
1 if int_curr_symbol is placed before non-negative international monetary value, ​0​ if after
(public member object)
char int_n_cs_precedes
(C99)
1 if int_curr_symbol is placed before negative international monetary value, ​0​ if after
(public member object)
char int_p_sep_by_space
(C99)
indicates the separation of int_curr_symbol, positive_sign, and the non-negative international monetary value
(public member object)
char int_n_sep_by_space
(C99)
indicates the separation of int_curr_symbol, negative_sign, and the negative international monetary value
(public member object)
char int_p_sign_posn
(C99)
indicates the position of positive_sign in a non-negative international monetary value
(public member object)
char int_n_sign_posn
(C99)
indicates the position of negative_sign in a negative 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円' is encountered, the last value seen is assumed to repeat for the remainder of digits. If CHAR_MAX is encountered, no further digits are grouped. The typical grouping of three digits at a time is "003円".

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

[edit] Example

Run this code
#include <locale.h>
#include <stdio.h>
 
int main(void)
{
 setlocale (LC_ALL, "ja_JP.UTF-8");
 struct lconv* lc = localeconv ();
 printf ("Japanese currency symbol: %s(%s)\n", lc->currency_symbol, lc->int_curr_symbol);
}

Possible output: 

Japanese currency symbol: \(JPY )

[edit] References

  • C23 standard (ISO/IEC 9899:2024):
  • 7.11/2 Localization <locale.h> (p: TBD)
  • C17 standard (ISO/IEC 9899:2018):
  • 7.11/2 Localization <locale.h> (p: TBD)
  • C11 standard (ISO/IEC 9899:2011):
  • 7.11/2 Localization <locale.h> (p: 223)
  • C99 standard (ISO/IEC 9899:1999):
  • 7.11/2 Localization <locale.h> (p: 204)
  • C89/C90 standard (ISO/IEC 9899:1990):
  • 4.4 LOCALIZATION <locale.h>

[edit] See also

queries numeric and monetary formatting details of the current locale
(function) [edit]
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