std::iostream_category

 

C++

Langage

Concepts

Bibliothèque d'utilitaires

Bibliothèque pour les chaînes de caractères

Bibliothèque de conteneurs

Bibliothèque d'algorithmes

Bibliothèque d'itérateurs

Bibliothèque pour le calcul numérique

Bibliothèque pour les entrées/sorties

Bibliothèque pour la régionalisation

Bibliothèque pour les expressions régulières (C++11)

Bibliothèque pour les opérations atomiques (C++11)

Bibliothèque pour les processus légers (threads) (C++11)

 

D'entrée / sortie de bibliothèque

I / O manipulateurs

C-style I / O

Tampons Original: Buffers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf

basic_filebuf

basic_stringbuf

strstreambuf (obsolète)

Cours d'eau Original: Streams The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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

ios_base

basic_ios

basic_istream

basic_ostream

basic_iostream

Fichier E / O Original: File I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_ifstream

basic_ofstream

basic_fstream

Chaîne I / O Original: String I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istringstream

basic_ostringstream

basic_stringstream

Tableau I / O Original: Array I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

istrstream (obsolète)

ostrstream (obsolète)

strstream (obsolète)

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

streamoff

streamsize

fpos

Interface catégorie d'erreur Original: Error category interface The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

iostream_category (C++11)

io_errc (C++11)

 

Défini dans l'en-tête <ios>
const std::error_category& iostream_category();		(depuis C++11)

Obtient une référence à l'objet catégorie d'erreur statique des erreurs iostream. L'objet est nécessaire pour annuler la error_category::name() fonction virtuelle de retourner un pointeur sur la chaîne de "iostream". Il est utilisé pour identifier les codes d'erreur fournis dans les exceptions prévues std::ios_base::failure type .

Original:

Obtains a reference to the static error category object for iostream errors. The object is required to override the virtual function error_category::name() to return a pointer to the string "iostream". It is used to identify error codes provided in the exceptions of type std::ios_base::failure.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Paramètres

(Aucun)

Original:

(none)

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Retourne la valeur

Une référence à l'objet statique de type à l'exécution indéterminée, dérivé de std::error_category .

Original:

A reference to the static object of unspecified runtime type, derived from std::error_category.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Exceptions

noexcept specification:  

noexcept

   (depuis C++11)

Exemple

#include <iostream>
#include <fstream>
 
int main()
{
    std::ifstream f("doesn't exist");
    try {
        f.exceptions(f.failbit);
    } catch (const std::ios_base::failure& e) {
        std::cout << "Caught an ios_base::failure.\n"
                  << "Error category: " << e.code().category().name() << '\n';
    }
}

Résultat :

Caught an ios_base::failure.
Error category: iostream

Voir aussi

failure	exception ruisseau Original: stream exception The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (classe membre publique de std::ios_base)
io_errc (C++11)	les codes d'erreur IO cours d'eau Original: the IO stream error codes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (enum)