std::clog, std::wclog

 

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)

 

std::basic_ostream

Les objets globaux Original: Global objects The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
cout wcout	cerr wcerr	clog wclog
Les fonctions membres Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator= (C++11)
Entrée formaté Original: Formatted input The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::operator<<
Entrée non formaté Original: Unformatted input The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::put
basic_ostream::write
Positionnement Original: Positioning The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::tellp
basic_ostream::seekp
Divers Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::flush
basic_ostream::swap (C++11)
Classes de membres Original: Member classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::sentry
Tiers fonctions Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
operator<<(std::basic_ostream)

 

Déclaré dans l'en-tête <iostream>
externstd::ostream clog;	(1)
externstd::wostream wclog;	(2)

Les objets globaux std::clog et de sortie de commande std::wclog à une mémoire tampon de flux de type défini par l'application (extraite de std::streambuf), associée à la norme C stderr flux de sortie, mais, à la différence std::cerr / std::wcerr, ces flux sont automatiquement supprimées et ne pas lier automatiquement ( ) 'd avec cout .

Original:

The global objects std::clog and std::wclog control output to a stream buffer of implementation-defined type (derived from std::streambuf), associated with the standard C output stream stderr, but, unlike std::cerr/std::wcerr, these streams are not automatically flushed and not automatically tie()'d with cout.

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Ces objets sont garantis d'être construits avant le premier constructeur d'un objet statique est appelé et ils sont garantis pour survivre à la dernière destructeur d'un objet statique, de sorte qu'il est toujours possible d'écrire à std::clog dans le code utilisateur .

Original:

These objects are guaranteed to be constructed before the first constructor of a static object is called and they are guaranteed to outlive the last destructor of a static object, so that it is always possible to write to std::clog in user code.

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Sauf sync_with_stdio(false) a été délivré, il est sûr d'accéder simultanément à ces objets à partir de plusieurs threads à la fois pour une sortie formatée et non formaté .

Original:

Unless sync_with_stdio(false) has been issued, it is safe to concurrently access these objects from multiple threads for both formatted and unformatted output.

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Exemple

#include <iostream>struct Foo {int n; Foo(){ std::clog<<"static constructor\n";} ~Foo(){ std::clog<<"static destructor\n";}}; Foo f;// static objectint main(){ std::clog<<"main function\n";}

Résultat :

static constructor main function static destructor

Voir aussi

Init	initialise les objets de flux standard Original: initializes standard stream objects 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)
cerr wcerr	écrit dans le flux d'erreur standard C stderr, unbuffered ( objet global Original: global object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. ) Original: writes to the standard C error stream stderr, unbuffered ( objet global Original: global object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. ) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
cout wcout	écrit à la norme C stdout ( objet global Original: global object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. ) flux de sortie Original: writes to the standard C output stream stdout ( objet global Original: global object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. ) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.