isgraph

Teste si un élément figurant dans des paramètres régionaux est un caractère alphanumérique ou de ponctuation.

template<Class CharType> 
   bool isgraph( 
      CharType _Ch,  
      const locale& _Loc 
   )

Paramètres

• _Ch
  L'élément à tester.

• _Loc
  Les paramètres régionaux contenant l'élément à tester.

Valeur de retour

true si l'élément testé est un caractère alphanumérique ou un caractère de ponctuation ; false dans le cas contraire.

Notes

La fonction de modèle retourne use_facet<ctype<CharType> >(_Loc).is(ctype<CharType>::graph, _Ch).

Exemple

// locale_is_graph.cpp
// compile with: /EHsc
#include <locale>
#include <iostream>

using namespace std;

int main( )
{
   locale loc ( "German_Germany" );
   bool result1 = isgraph ( 'L', loc );
   bool result2 = isgraph ( '\t', loc );
   bool result3 = isgraph ( '.', loc );

   if ( result1 )
      cout << "The character 'L' in the locale is\n "
           << "an alphanumeric or punctuation character." << endl;
   else
      cout << "The character 'L' in the locale is\n "
           << " not an alphanumeric or punctuation character." << endl;

   if ( result2 )
      cout << "The character 'backslash-t' in the locale is\n "
           << "an alphanumeric or punctuation character." << endl;
   else
      cout << "The character 'backslash-t' in the locale is\n "
           << "not an alphanumeric or punctuation character." << endl;

   if ( result3 )
      cout << "The character '.' in the locale is\n "
           << "an alphanumeric or punctuation character." << endl;
   else
      cout << "The character '.' in the locale is\n "
           << " not an alphanumeric or punctuation character." << endl;
}

Sortie

The character 'L' in the locale is
 an alphanumeric or punctuation character.
The character 'backslash-t' in the locale is
 not an alphanumeric or punctuation character.
The character '.' in the locale is
 an alphanumeric or punctuation character.

Configuration requise

En-tête : <locale>

Espace de noms : std