Varianti

    std::isdigit<div class="t-tr-text">(Std :: locale)<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>

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    <metanoindex/>

     
    C++
     
    Localizzazioni libreria
    Impostazioni internazionali e sfaccettature
    Original:
    Locales and facets
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    locale
    Carattere classificazione
    Original:
    Character classification
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    Conversioni
    Original:
    Conversions
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    Facet categoria classi di base
    Original:
    Facet category base classes
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    Facet categorie
    Original:
    Facet categories
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    Locale specifici aspetti
    Original:
    Locale-specific facets
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    Codice di conversione sfaccettature
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    Code conversion facets
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    codecvt_utf8(C++11)
    codecvt_utf16(C++11)
    C locale
    Original:
    C locale
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    <tbody> </tbody>
    Elemento definito nell'header <locale>
    template< class charT > bool isdigit( charT ch, const locale& loc );

    Checks if the given character is classified as a digit by the given locale's std::ctype facet.

    Parametri

    ch -
    carattere
    Original:
    character
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    loc -
    locale
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    locale
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    Valore di ritorno

    Returns true if the character is classified as a digit, false otherwise.

    Possibile implementazione

    template< class charT >
bool isdigit( charT ch, const std::locale& loc ) {
    return std::use_facet<std::ctype<charT>>(loc).is(std::ctype_base::digit, ch);
}

    Esempio

    This section is incomplete
    Reason: no example

    Vedi anche
    Verifica se un carattere è una cifra
    Original:
    checks if a character is a digit
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    (funzione) [modifica]
    Verifica se un carattere esteso è una cifra
    Original:
    checks if a wide character is a digit
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    (funzione) [modifica]