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    std::iswctype

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    <metanoindex/>

     
    C++
     
    Strings Bibliothek
    Null-terminierte Strings
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    Null-terminated strings
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    Byte-Strings
    Multibyte-Strings
    Wide Strings
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    Classes
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    basic_string
    char_traits
     
    Nullterminierten Wide Strings
    Funktionen
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    Functions
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    Character Manipulation
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    Character manipulation
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    Umwandlungen in numerische Formate
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    Conversions to numeric formats
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    String-Manipulation
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    String manipulation
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    wmemcpy
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    <tbody> </tbody>
    definiert in Header <cwctype>
    int iswctype( std::wint_t ch, std::wctype_t desc );
    Stuft die Breitzeichen wc mit der aktuellen C Gebietsschemas LC_CTYPE Kategorie durch desc identifiziert .
    Original:
    Classifies the wide character wc using the current C locale's LC_CTYPE category identified by desc.
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    Parameter

    ch -
    die breite Charakter zu klassifizieren
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    the wide character to classify
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    desc -
    die Kategorie LC_CTYPE, von einem Aufruf std::wctype erhalten
    Original:
    the LC_CTYPE category, obtained from a call to std::wctype
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    Rückgabewert

    Nicht-Null, wenn der Charakter ch die Eigenschaft von desc in LC_CTYPE Facette der aktuellen C locale erkannt hat .
    Original:
    Non-zero if the character ch has the property identified by desc in LC_CTYPE facet of the current C locale.
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    Beispiel

    #include <clocale>
#include <cwctype>
#include <iostream>
bool classify(wchar_t ch, const std::string& cat)
{
    return std::iswctype(ch, std::wctype(cat.c_str()));
}
int main()
{
    std::setlocale(LC_ALL, "ja_JP.UTF-8");
    std::cout << "The character \u6c34 is...\n";
    for(std::string s : {"digit", "alpha", "space", "cntrl", "jkanji"})
        std::cout << s << "? " << std::boolalpha << classify(L'\u6c34', s) << '\n';
}

    Output: 

    The character 水 is...
digit? false
alpha? true
space? false
cntrl? false
jkanji? true

    Siehe auch
    sieht einen Charakter Klassifizierung Kategorie in der aktuellen C locale
    Original:
    looks up a character classification category in the current C locale
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    (Funktion) [edit]