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    std::iscntrl

    De cppreference.com

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    <metanoindex/>

     
    C++
     
    Bibliothèque de chaînes de caractères
    Chaînes à zéro terminal
    Original:
    Null-terminated strings
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    Les chaînes d'octets
    Chaines multi-octets
    Les chaînes étendues
    Classes
    Original:
    Classes
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    basic_string
    char_traits
     
    Chaînes d'octets à zéro terminal
    Fonctions
    Original:
    Functions
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    Manipulation caractère
    Original:
    Character manipulation
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    Conversion aux formats numériques
    Original:
    Conversions to numeric formats
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    La manipulation de chaînes
    Original:
    String manipulation
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    strcpy
    strncpy
    strcat
    strncat
    strxfrm
    Examen chaîne
    Original:
    String examination
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    Manipulation de la mémoire
    Original:
    Memory manipulation
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    memchr
    memcmp
    memset
    memcpy
    memmove
    Divers
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    Miscellaneous
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    strerror
     
    <tbody> </tbody>
    Déclaré dans l'en-tête <cctype>
    int iscntrl( int ch );
    Vérifie si le caractère donné est classé comme un caractère de contrôle par les paramètres régionaux actuellement installé C. Dans la localisation C par défaut, les caractères de contrôle sont les personnages avec les codes 0x00-0x1F et 0x7F .
    Original:
    Checks if the given character is classified as a control character by the currently installed C locale. In the default C locale, the control characters are the characters with the codes 0x00-0x1F and 0x7F.
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    Paramètres

    ch -
    caractère
    Original:
    character
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    Retourne la valeur

    Valeur non nulle (true) si le caractère est un caractère de contrôle, 0 (false) autrement .
    Original:
    Non-zero value (true) if the character is a control character, 0 (false) otherwise.
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    Exemple

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

int main()
{
    char c = '\x94'; // the control code CCH in ISO-8859-1

    std::cout << "iscntrl(\'\\x94\', default C locale) returned "
               << std::boolalpha << (bool)std::iscntrl(c) << '\n';

    std::setlocale(LC_ALL, "en_GB.iso88591");
    std::cout << "iscntrl(\'\\x94\', ISO-8859-1 locale) returned "
              << std::boolalpha << (bool)std::iscntrl(c) << '\n';

}

    Résultat : 

    iscntrl('\x94', default C locale) returned false
iscntrl('\x94', ISO-8859-1 locale) returned true

    Voir aussi
    vérifie si un caractère est considéré comme un caractère de contrôle par un paramètre régional
    Original:
    checks if a character is classified as a control character by a locale
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    (fonction générique)