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Locale
Use the setlocale function to change or query some or all of the current program locale information. "Locale" refers to the locality (the country and language) for which you can customize certain aspects of your program. Some locale-dependent categories include the formatting of dates and the display format for monetary values. For more information, see Locale Categories.
Locale-Dependent Routines
Routine
Use setlocaleCategory
Setting Dependence
atof, atoi, atol
Convert character to floating-point, integer, or long integer value, respectively
LC_NUMERIC
is Routines
Test given integer for particular condition.
LC_CTYPE
isleadbyte
Test for lead byte ()
LC_CTYPE
localeconv
Read appropriate values for formatting numeric quantities
LC_MONETARY, LC_NUMERIC
MB_CUR_MAX
Maximum length in bytes of any multibyte character in current locale (macro defined in STDLIB.H)
LC_CTYPE
_mbccpy
Copy one multibyte character
LC_CTYPE
_mbclen
Return length, in bytes, of given multibyte character
LC_CTYPE
mblen
Validate and return number of bytes in multibyte character
LC_CTYPE
_mbstrlen
For multibyte-character strings: validate each character in string; return string length
LC_CTYPE
mbstowcs
Convert sequence of multibyte characters to corresponding sequence of wide characters
LC_CTYPE
mbtowc
Convert multibyte character to corresponding wide character
LC_CTYPE
printf functions
Write formatted output
LC_NUMERIC (determines radix character output)
scanf functions
Read formatted input
LC_NUMERIC (determines radix character recognition)
setlocale, _wsetlocale
Select locale for program
Not applicable
strcoll, wcscoll
Compare characters of two strings
LC_COLLATE
_stricoll, _wcsicoll
Compare characters of two strings (case insensitive)
LC_COLLATE
_strncoll, _wcsncoll
Compare first n characters of two strings
LC_COLLATE
_strnicoll, _wcsnicoll
Compare first n characters of two strings (case insensitive)
LC_COLLATE
strftime, wcsftime
Format date and time value according to supplied format argument
LC_TIME
_strlwr
Convert, in place, each uppercase letter in given string to lowercase
LC_CTYPE
strtod, wcstod, strtol, wcstol, strtoul, wcstoul
Convert character string to double, long, or unsigned long value
LC_NUMERIC (determines radix character recognition)
_strupr
Convert, in place, each lowercase letter in string to uppercase
LC_CTYPE
strxfrm, wcsxfrm
Transform string into collated form according to locale
LC_COLLATE
tolower, towlower
Convert given character to corresponding lowercase character
LC_CTYPE
toupper, towupper
Convert given character to corresponding uppercase letter
LC_CTYPE
wcstombs
Convert sequence of wide characters to corresponding sequence of multibyte characters
LC_CTYPE
wctomb
Convert wide character to corresponding multibyte character
LC_CTYPE
_wtoi, _wtol
Convert wide-character string to int or long
LC_NUMERIC