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      std::isalpha(std::locale)

      From cppreference.com
      <cpp‎ |locale
       
       
       
      Localization library
       
      Defined in header<locale>
      template<class CharT>
      bool isalpha( CharT ch,const locale& loc);

      Checks if the given character is classified as an alphabetic character by the given locale'sstd::ctype facet.

      Contents

      [edit]Parameters

      ch - character
      loc - locale

      [edit]Return value

      Returnstrue if the character is classified as alphabetic,false otherwise.

      [edit]Possible implementation

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

      [edit]Example

      Demonstrates the use ofisalpha() with different locales (OS-specific).

      Run this code
      #include <iostream>#include <locale> int main(){constwchar_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';}

      Possible output:

      isalpha('Я', C locale) returned falseisalpha('Я', Unicode locale) returned true

      [edit]See also

      checks if a character is alphabetic
      (function)[edit]
      checks if a wide character is alphabetic
      (function)[edit]
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/locale/isalpha&oldid=160126"

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