Here is an example showing how you might use setlocale to temporarily switch to a new locale. The locale value determines the default format of date, time, number, and currency values, according to language and regional conventions. Each system and specific compiler implementation may provide different choices of locales to be selected using function setlocale, but at least two locales are available to choose for any c program the c locale is the minimal locale. This is the gnu c library reference manual, for version 2. Product advertising api operations are the same for all locales but valid search indices, browse node ids, sort values, and itemsearch parameters vary by locale. Even when we use the term function, any facility in the api may be provided as a macro instead. This guide provides a useful look at the standard c programming language.
Locale reference for the product advertising api product. Msl c reference version 10 3 table of contents 1 introduction 1 organization of files. The same logic is used to set the default locale value when sys. This section describes the c api for lua, that is, the set of c functions available to the host program to communicate with lua. If lang is not set or is set to the empty string, then setlocale sets the category to the c locale.
The function setlocale sets the current locale for category category to locale. This is very useful if a region is known under different names on different systems. The argument category determines which parts of the programs current locale should be modified. C programmingstandard library reference wikibooks, open. The second way to define setlocale uses locale objects to set the locale and retrieve localesensitive data. The former provides access to the current locale, while the latter allows one to set the current locale. Ceeqryl is sensitive to the locales set by setlocale or ceesetl, not to the language environment settings from country or. If a pointer to a string is given for locale, setlocale attempts to set the locale for all the categories to locale. The locale argument can take a locale name, a language string, a language string and countryregion code, a code page, or a language string, countryregion code, and code page. If the location is an array, setlocale will try each array element until it finds a valid language or region code. The c library reference guide school of electrical. The gnu c library reference manual gnu operating system. Although normally described in a c language manual, the gnu c preprocessor has been thoroughly documented in the c preprocessor, a separate manual which covers preprocessing for c. The syntax for the setlocale function in the c language is.
The portions of the current locale affected by a call to this function are specified by argument category. Each system and specific compiler implementation may provide different choices of locales to be selected using function setlocale, but at least two locales are available to choose for any c program. It is necessary only when running nonunicode applications that must deal with text for example, filename strings that is not part of the ascii character set for example, japanese characters. The functions are used in multilingual programs to adapt to the specific locale.
The setlocale function is used to set and retrieve the current locale. Set the locale for the category designated by the argument icategory to the locale given in the argument kcplocale. To use the locales specified by the environment, you must call setlocale. Parameters or arguments category the programs locale to change. The setlocale function installs the specified system locale or its portion as the new c locale. Following is the declaration for setlocale function. The modifications remain in effect and influences the execution of all localesensitive c library functions until the next call to setlocale.
The c language includes a set of preprocessor directives, which are used for things such as macro text replacement, conditional compilation, and file inclusion. If this return string is used in a subsequent setlocale call and the category arguments of the two calls do not match, the locale remains unchanged and a null pointer is returned. If locale is a null pointer, setlocale queries the current c. In no way does this guide attempt to teach one how to program in c, nor will it attempt to provide the history of c or the various implementations of it. Description top the setlocale function is used to set or query the programs current locale. Description the setlocale function sets the c librarys notion of natural language formatting style for particular sets of routines. Generated on 2019mar30 from project glibc revision glibc2. The setlocale function can also be used to query the current c locale. However, these variables do not automatically control the locale used by the library functions, because iso c says that all programs start by default in the standard c locale. Nonconfidential pdf versionarm dui0378h arm compiler v5. Set or retrieve locale sets locale information to be used by the current program, either changing the entire locale or portions of it.
This has the effect of initializing each category to the locale described by the environment c. Setting the locale the gnu c library gnu operating system. C programmingstandard library reference from wikibooks, open books for an open world programmingstandard library reference. This category can only be changed by explicitly calling sys. C and posix are synonyms for the posix c locale definition, which is prebuilt into the library. The purposes that locales serve are grouped into categories, so that a user or a program can choose the locale for each category independently. The setlocale function is used to set a specified system locale for the given category. C programming reference manual, volume 1 product support login.
If locale is not null, the programs current locale is modified according to the arguments. Ceeqryl, analogous to the c language function localename setlocale category, null, queries the environment for which locale defines the current setting for the locale category. If a request has multiple setlocale functions, the current locale setting affects how localesensitive coldfusion tags and functions, such. If locale is a null pointer, setlocale queries the current c locale without modifying it. Contents section number title page chapter 1 introduction 1.
The locale must be a simple locale, consisting of a single locale. If a request has multiple setlocale functions, the current locale setting affects how localesensitive coldfusion tags and functions, such as the functions that start with ls format data. All api functions and related types and constants are declared in the header file lua. C language reference manual department of computer science. So, as per behavior of the setlocale, if you pass second parameter as or null, it takes the default from the system enviornment lang. If locale is an empty string, each part of the locale that should be modified is set according to the environment variables. The original way to define setlocale uses cld locale objects to set the locale and retrieve localesensitive data.
If locale is, each part of the locale that should be modified is set according to the environment variables. A c program inherits its locale environment variables when it starts up. This revision of the c language reference manual supports the 7. The setlocale function is used to set or query the programs current locale. The c language supports localization specific settings, such as culturespecific date formats or countryspecific currency symbols. In particular, the way of displaying of numbers and currency can be modified. This is not a tutorial introduction to programming. Sets the countrylanguage locale for cfml processing and the page returned to the client. The locale name is chosen according to the first of the following conditions that applies.
To view all available language codes, go to our language code reference. The return value is a string describing the locale new setting, if the function was successful. In computing, c localization functions are a group of functions in the c programming language implementing basic localization routines. There are two ways of defining setlocale and other localesensitive c functions on the system i platform.
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