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std::cout, std::wcout

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< cpp‎ | io

 
 
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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cout
wcout
Member-Funktionen
Original:
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
Original:
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 cout;
(1)
extern std::wostream wcout;
(2)
Die globale Objekte std::cout und std::wcout Steuerausgang zu einem Strom-Puffer der Umsetzung Typs (abgeleitet von std::streambuf), mit der Standard-C-Output-Stream verbundenen stdout .
Original:
The global objects std::cout and std::wcout control output to a stream buffer of implementation-defined type (derived from std::streambuf), associated with the standard C output stream stdout.
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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::cout 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::cout 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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Einmal initialisiert, ist std::cout tie () 'd std::cin und std::wcout wird tie ()' d std::wcin, was bedeutet, dass jeder Eingang Betrieb auf std::cin std::cout.flush() führt (via std::basic_istream::sentry Konstruktor) .
Original:
Once initialized, std::cout is tie()'d to std::cin and std::wcout is tie()'d to std::wcin, meaning that any input operation on std::cin executes std::cout.flush() (via std::basic_istream::sentry's constructor).
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Einmal initialisiert std::cout wird auch binden () 'd std::cerr und std::wcout ist tie ()' d std::wcerr, bedeutet, dass jede Ausgabe-Operation am std::cerr std::cout.flush() führt (via std::basic_ostream::sentry Konstruktor) (seit C++11)
Original:
Once initialized, std::cout is also tie()'d to std::cerr and std::wcout is tie()'d to std::wcerr,, meaning that any output operation on std::cerr executes std::cout.flush() (via std::basic_ostream::sentry's constructor) (seit C++11)
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[Bearbeiten] Beispiel

#include <iostream>
struct Foo {
    int n;
    Foo() {
       std::cout << "static constructor\n";
    }
    ~Foo() {
       std::cout << "static destructor\n";
    }
};
Foo f; // static object
int main()
{
    std::cout << "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
(globales Objekt)
Original:
writes to the standard C error stream stderr
(globales Objekt)
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[edit]
cout
wcout
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]