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std::basic_ostream::write

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< cpp‎ | io‎ | basic ostream

 
 
Entrada / salida de la biblioteca
I / O manipuladores
C-estilo I / O
Buffers
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Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(obsoleto)
Arroyos
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Streams
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Abstracciones
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Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I / O
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File I/O
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basic_ifstream
basic_ofstream
basic_fstream
Cadena de I / O
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String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Matriz I / O
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Array I/O
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istrstream(obsoleto)
ostrstream(obsoleto)
strstream(obsoleto)
Tipos
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Types
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streamoff
streamsize
fpos
Error interfaz categoría
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Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_ostream
Los objetos globales
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Global objects
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Las funciones miembro
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Member functions
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basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator=(C++11)
Entrada con formato
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Formatted input
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basic_ostream::operator<<
Entrada sin formato
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Unformatted input
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basic_ostream::put
basic_ostream::write
Posicionamiento
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Positioning
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basic_ostream::tellp
basic_ostream::seekp
Varios
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Miscellaneous
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basic_ostream::flush
basic_ostream::swap(C++11)
Clases de miembros
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Member classes
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basic_ostream::sentry
Terceros funciones
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Non-member functions
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operator<<(std::basic_ostream)
 
basic_ostream& write( const char_type* s, std::streamsize count );

Outputs characters from successive locations in the character array whose first element is pointed to by s. Characters are inserted into the output sequence until one of the following occurs:

  • exactly count characters are inserted
  • inserting into the output sequence fails (in which case setstate(badbit) is called)
Esta función es una función de salida sin formato: se inicia la ejecución mediante la construcción de un objeto de tipo sentry, que vacía los buffers de salida tie()'d si es necesario y comprueba los errores de secuencia. Después de la construcción, si se devuelve el objeto centinela false, la función devuelve sin pretender ninguna salida. Si se produce una excepción durante la salida, entonces ios :: badbit se establece (se suprime la excepción a menos que exceptions()&badbit != 0, en cuyo caso se vuelve a iniciar)
Original:
This function is an unformatted output function: it begin execution by constructing an object of type sentry, which flushes the tie()'d output buffers if necessary and checks the stream errors. After construction, if the sentry object returns false, the function returns without attempting any output. If an exception is thrown during output, then ios::badbit is set (the exception is suppressed unless exceptions()&badbit != 0, in which case it is rethrown)
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Contenido

[editar] Parámetros

s - pointer to the character string to write
count - number of characters to write

[editar] Valor de retorno

*this

[editar] Notas

formato
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This function is not overloaded for the types signed char or unsigned char, unlike the formatted
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Also, unlike the formatted output functions, this function does not set the failbit on failure.

[editar] Excepciones

If an exception occurs during output and exceptions()&badbit != 0, rethrows that exception.

If output fails and exceptions()&badbit != 0, throws ios_base::failure.

[editar] Ejemplo

This function may be used to output object representations, i.e. binary output

#include <iostream>
int main()
{
    int n = 0x41424344;
    std::cout.write(reinterpret_cast<char*>(&n), sizeof n);
    std::cout << '\n';
}

Output:

DCBA

[editar] Ver también

inserciones de datos de caracteres
Original:
inserts character data
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(función) [edit]
inserta un carácter
Original:
inserts a character
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(miembro público función) [edit]