std::tolower — cppreference.com

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Déclaré dans l'en-tête `<cctype>`
`int tolower( int ch );`

Convertit le caractère donné en minuscules, conformément aux règles de conversion de caractères définies par les paramètres régionaux actuellement installé C .

Original:

Converts the given character to lowercase according to the character conversion rules defined by the currently installed C locale.

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Paramètres

caractère à convertir

Original:

character to be converted

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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.

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Exemple

#include <iostream>
#include <cctype>
#include <clocale>

int main()
{
    char c = '\xb4'; // the character Ž in ISO-8859-15
                     // but ´ (acute accent) in ISO-8859-1 

    std::setlocale(LC_ALL, "en_US.iso88591");
    std::cout << std::hex << std::showbase;
    std::cout << "in iso8859-1, tolower('0xb4') gives "
              << std::tolower(c) << '\n';
    std::setlocale(LC_ALL, "en_US.iso885915");
    std::cout << "in iso8859-15, tolower('0xb4') gives "
              << std::tolower(c) << '\n';
}

Résultat :

in iso8859-1, tolower('0xb4') gives 0xb4
in iso8859-15, tolower('0xb4') gives 0xb8

Voir aussi


toupper	convertit un caractère en majuscules Original: converts a 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) [edit]

tolower(std::locale)	converts a character to lowercase using the ctype facet of a locale (fonction générique) [edit]

towlower	convertit le caractère large en minuscules 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. (fonction) [edit]

C documentation for tolower