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std::clog, std::wclog

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Input / Output-Bibliothek
I / O-Manipulatoren
C-style I / O
Puffern
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(veraltet)
Streams
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Streams
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Abstraktionen
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Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
Datei-I / O
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File I/O
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basic_ifstream
basic_ofstream
basic_fstream
String I / O
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String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Array I / O
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Array I/O
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istrstream(veraltet)
ostrstream(veraltet)
strstream(veraltet)
Types
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Types
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streamoff
streamsize
fpos
Fehler Kategorie Schnittstelle
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Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_ostream
Globale Objekte
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Global objects
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clog
wclog
Member-Funktionen
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Member functions
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basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator=(C++11)
Formatierte Eingabe
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Formatted input
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basic_ostream::operator<<
Unformatierte Eingabe
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Unformatted input
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basic_ostream::put
basic_ostream::write
Positionierung
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Positioning
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basic_ostream::tellp
basic_ostream::seekp
Verschiedenes
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Miscellaneous
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basic_ostream::flush
basic_ostream::swap(C++11)
Mitglied Klassen
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Member classes
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basic_ostream::sentry
Non-Member-Funktionen
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Non-member functions
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operator<<(std::basic_ostream)
 
Defined in header <iostream>
extern std::ostream clog;
(1)
extern std::wostream wclog;
(2)
Die globale Objekte std::clog und std::wclog Steuerausgang auf einen Strompuffer der Umsetzung Typs (abgeleitet von std::streambuf), mit dem Standard C Ausgabestrom stderr assoziiert, aber im Gegensatz std::cerr / std::wcerr, diese Ströme sind nicht automatisch gespült und nicht automatisch binden ( ) 'd mit 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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Diese Objekte sind garantiert gebaut, bevor die erste Konstruktor einer statischen Objekt aufgerufen werden, und sie werden garantiert, um die letzten Destruktor eines statischen Objekts überleben, so dass es immer möglich ist, um std::clog im User-Code zu schreiben .
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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Sofern sync_with_stdio(false) ausgestellt wurde, ist es sicher den gleichzeitigen Zugriff auf diese Objekte aus mehreren Threads sowohl für formatierte und unformatierte Ausgabe .
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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[Bearbeiten] Beispiel

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

Output:

static constructor
main function
static destructor

[Bearbeiten] Siehe auch

initialisiert Standard-Stream-Objekten
Original:
initializes standard stream objects
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(öffentlichen Member der Klasse of std::ios_base) [edit]
schreibt der Standard-C-Fehler Stream stderr, unbuffered
(globales Objekt)
Original:
writes to the standard C error stream stderr, unbuffered
(globales Objekt)
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[edit]
schreibt der Standard-C Ausgabe-Stream stdout
(globales Objekt)
Original:
writes to the standard C output stream stdout
(globales Objekt)
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[edit]