(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> - cppreference.com" /> std::isalpha<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> - cppreference.com
Espaços nominais
Variantes
Acções

std::isalpha<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>

Da cppreference.com
< cpp‎ | locale

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C++
 
Biblioteca localizações
Localidades e facetas
Original:
Locales and facets
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Classificação de caracteres
Original:
Character classification
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Conversões
Original:
Conversions
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Facet classes base da categoria
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Facet category base classes
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Categorias faceta
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Facet categories
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Específicos da localidade facetas
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Locale-specific facets
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Facetas de conversão de código
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Code conversion facets
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(C++11)
(C++11)
C localidade
Original:
C locale
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Definido no cabeçalho <locale>
template< class charT >
bool isalpha( charT ch, const locale& loc );
Verifica se o caráter dado classificado como um caractere alfabético por faceta determinada localidade de std::ctype.
Original:
Checks if the given character classified as an alphabetic character by the given locale's std::ctype facet.
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Índice

[editar] Parâmetros

ch -
personagem
Original:
character
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loc -
localidade
Original:
locale
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[editar] Valor de retorno

Retorna true se o personagem é classificado como alfabético, false outra forma.
Original:
Returns true if the character is classified as alphabetic, false otherwise.
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[editar] Possível implementação

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

[editar] Exemplo

Demonstra o uso de isalpha () com diferentes localidades (OS-específica) .
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Demonstrates the use of isalpha() with different locales (OS-specific).
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#include <iostream>
#include <locale>
int main()
{
    const wchar_t c = L'\u042f'; // cyrillic capital letter ya
 
    std::locale loc1("C");
    std::cout << "isalpha('Я​', C locale) returned "
               << std::boolalpha << std::isalpha(c, loc1) << '\n';
 
    std::locale loc2("en_US.UTF8");
    std::cout << "isalpha('Я', Unicode locale) returned "
              << std::boolalpha << std::isalpha(c, loc2) << '\n';
}

Saída: 

isalpha('Я​', C locale) returned false
isalpha('Я', Unicode locale) returned true

[editar] Veja também
checa se o personagem é alfabética
Original:
checks if a character is alphabetic
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(função) [edit]
verifica se um caractere largo é alfabética
Original:
checks if a wide character is alphabetic
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(função) [edit]
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