std::towlower
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<metanoindex/>
<tbody> </tbody>| Déclaré dans l'en-tête <cwctype>
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std::wint_t towlower( std::wint_t ch ); |
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Convertit le caractère large en minuscules, si possible .
Original:
Converts the given wide character to lowercase, if possible.
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Paramètres
| ch | - | caractère large à convertir
Original: wide character to be converted The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Retourne la valeur
Version en minuscules ou
ch ch non modifiée si aucune version en minuscules est répertorié dans la locale courante C .Original:
Lowercase version of
ch or unmodified ch if no lowercase version is listed in the current C locale.The text has been machine-translated via Google Translate.
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Notes
Seulement 1:1 mappage de caractères peut être effectuée par cette fonction, par exemple, la lettre majuscule grecque Σ 'a deux formes minuscules, en fonction de la position dans un mot: «σ» et «ς». Un appel à std::towlower ne peut pas être utilisé pour obtenir la forme correcte minuscules dans cette affaire .
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::towlower cannot be used to obtain the correct lowercase form in this case.
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Exemple
#include <iostream>
#include <cwctype>
#include <clocale>
int main()
{
wchar_t c = L'\u0190'; // Latin capital open E ('Ɛ')
std::cout << std::hex << std::showbase;
std::cout << "in the default locale, towlower(" << (std::wint_t)c << ") = "
<< std::towlower(c) << '\n';
std::setlocale(LC_ALL, "en_US.utf8");
std::cout << "in Unicode locale, towlower(" << (std::wint_t)c << ") = "
<< std::towlower(c) << '\n';
}
Résultat :
in the default locale, towlower(0x190) = 0x190
in Unicode locale, towlower(0x190) = 0x25b
Voir aussi
convertit le caractère large en majuscules Original: converts a wide character to uppercase The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction) | |
| converts a character to lowercase using the ctype facet of a locale (fonction générique) | |
convertit un caractère en minuscule 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. (fonction) | |
C documentation for towlower
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