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std::cout, std::wcout

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< cpp‎ | io

 
 
Entrada / salida de la biblioteca
I / O manipuladores
C-estilo I / O
Buffers
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(obsoleto)
Arroyos
Original:
Streams
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Abstracciones
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
Cadena de I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Matriz I / O
Original:
Array I/O
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istrstream(obsoleto)
ostrstream(obsoleto)
strstream(obsoleto)
Tipos
Original:
Types
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streamoff
streamsize
fpos
Error interfaz categoría
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_ostream
Los objetos globales
Original:
Global objects
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cout
wcout
Las funciones miembro
Original:
Member functions
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basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator=(C++11)
Entrada con formato
Original:
Formatted input
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basic_ostream::operator<<
Entrada sin formato
Original:
Unformatted input
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basic_ostream::put
basic_ostream::write
Posicionamiento
Original:
Positioning
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basic_ostream::tellp
basic_ostream::seekp
Varios
Original:
Miscellaneous
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basic_ostream::flush
basic_ostream::swap(C++11)
Clases de miembros
Original:
Member classes
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basic_ostream::sentry
Terceros funciones
Original:
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)
Los objetos globales std::cout y std::wcout salida de control a un búfer de la secuencia de aplicación definido por el tipo (derivado de std::streambuf), asociada con el flujo de salida estándar C 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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Estos objetos están garantizados para ser construido antes de la primera constructor de un objeto estático se llama y que están garantizados para sobrevivir a la última destructor de un objeto estático, por lo que siempre es posible escribir en std::cout en código de usuario .
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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A menos que sync_with_stdio(false) se ha emitido, se puede acceder a estos objetos simultáneamente desde varios subprocesos, tanto para la salida con formato y sin formato .
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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Una vez inicializado, std::cout es lazo () 'd a std::cin y se std::wcout lazo ()' d a std::wcin, lo que significa que cualquier operación de entrada en std::cin ejecuta std::cout.flush() (a través del constructor std::basic_istream::sentry) .
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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Una vez inicializado, std::cout también se atan () 'd a std::cerr y std::wcout es lazo ()' d a std::wcerr,, lo que significa que cualquier operación de salida en std::cerr ejecuta std::cout.flush() (a través del constructor std::basic_ostream::sentry) (desde 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) (desde C++11)
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[editar] Ejemplo

#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

[editar] Ver también

inicializa los objetos estándar de la corriente
Original:
initializes standard stream objects
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(miembro público of std::ios_base clase) [edit]
escribe en el stderr
(objeto global) corriente estándar de C error
Original:
writes to the standard C error stream stderr
(objeto global)
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[edit]
cout
wcout
escribe en el stdout
(objeto global) corriente estándar C de salida
Original:
writes to the standard C output stream stdout
(objeto global)
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[edit]