std::tolower<div class="t-tr-text">(STD :: локаль)<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">(std::locale)</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div>

 

C++

Язык

Понятия (концепции)

Утилиты

Строки

Контейнеры

Алгоритмы

Итераторы

Работа с числами

Ввод / вывод

Локализация

Регулярные выражения (C++11)

Атомарные примитивы (C++11)

Потоки (C++11)

 

Локализация библиотеки

Языки и граней Original: Locales and facets The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
locale
use_facet	has_facet
Персонаж классификации Original: Character classification The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
isspace isblank (C++11) iscntrl isupper islower isalpha	isdigit ispunct isxdigit isalnum isprint isgraph
Преобразования Original: Conversions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
toupper tolower	wstring_convert (C++11) wbuffer_convert (C++11)
Facet классов категории базу Original: Facet category base classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ctype_base codecvt_base messages_base	time_base money_base
Facet категорий Original: Facet categories The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ctype ctype<char> codecvt collate messages time_get time_put	num_get num_put numpunct money_get money_put moneypunct
Язык конкретных аспектов Original: Locale-specific facets The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ctype_byname ctype_byname<char> codecvt_byname messages_byname collate_byname	time_get_byname time_put_byname numpunct_byname moneypunct_byname
Код аспекты преобразования Original: Code conversion facets The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
codecvt_utf8 (C++11) codecvt_utf16 (C++11)	codecvt_utf8_utf16 (C++11) codecvt_mode (C++11)
C локали Original: C locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
setlocale localeconv lconv	LC_ALL LC_COLLATE LC_CTYPE LC_MONETARY LC_NUMERIC LC_TIME

 

Заголовочный файл <locale>
template< class charT > charT tolower( charT ch, const locale& loc );

Преобразует символ ch в нижний регистр, если возможно, используя правила преобразования указанного std::ctype аспект данной локали.

Original:

Converts the character ch to lowercase if possible, using the conversion rules specified by the given locale's std::ctype facet.

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Параметры

ch	-	характер Original: character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
loc	-	локали Original: locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Возвращаемое значение

Возвращает строчной форме ch если он указан в локали, в противном случае вернуть ch без изменений.

Original:

Returns the lowercase form of ch if one is listed in the locale, otherwise return ch unchanged.

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Notes

Только 1:01 характера отображения могут быть выполнены с помощью этой функции, например, греческая прописная буква 'Σ' имеет две строчные формы, в зависимости от положения в слове: «σ» и «ς. Вызов std::tolower не может быть использована для получения правильной формы строчных в данном случае.

Original:

Only 1:1 character mapping can be performed by this function, e.g. the Greek uppercase letter 'Σ' has two lowercase forms, depending on the position in a word: 'σ' and 'ς'. A call to std::tolower cannot be used to obtain the correct lowercase form in this case.

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Возможная реализация

template< class charT > charT tolower( charT ch, const std::locale& loc ) { return std::use_facet<std::ctype<charT>>(loc).tolower(ch); }

См. также

toupper(std::locale)	преобразует символ в верхний регистр помощью CType аспект языка Original: converts a character to uppercase using the ctype facet of a locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (шаблон функции)
tolower	преобразует символ в нижний регистр Original: converts a character to lowercase The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (функция)
towlower	преобразует широкий символ в нижний регистр Original: converts a wide character to lowercase The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (функция)