Espacios de nombres
Variantes

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>

De cppreference.com
 
 
 
<tbody> </tbody>
Definido en el archivo de encabezado <locale>
template< class charT > bool isalpha( charT ch, const locale& loc );
Comprueba si el carácter dado clasificado como un carácter alfabético por faceta std::ctype la configuración regional determinada .
Original:
Checks if the given character classified as an alphabetic character by the given locale's std::ctype facet.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Parámetros

ch -
carácter
Original:
character
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
loc -
locale
Original:
locale
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Valor de retorno

Devoluciones true si el personaje está clasificado como alfabético, false de otra manera .
Original:
Returns true if the character is classified as alphabetic, false otherwise.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Posible implementación

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);
}

Ejemplo

Muestra el uso de isalpha () con diferentes configuraciones regionales (OS-específico) .
Original:
Demonstrates the use of isalpha() with different locales (OS-specific).
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#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';
}

Salida:

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

Ver también

Comprueba si un carácter es alfabético
Original:
checks if a character is alphabetic
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(función) [editar]
Comprueba si un carácter ancho es alfabético
Original:
checks if a wide character is alphabetic
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(función) [editar]