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std::fwrite

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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)
 
C-estilo I / O
Funciones
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Functions
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Acceso a archivos
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File access
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Directo de entrada / salida
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Direct input/output
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fread
fwrite
Entrada sin formato / salida
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Unformatted input/output
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Formato de entrada / salida
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Formatted input/output
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Presentar posicionamiento
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File positioning
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ftell
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rewind
Gestión de errores
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Error handling
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clearerr
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ferror
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Las operaciones en los archivos
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Operations on files
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remove
rename
tmpfile
tmpnam
 
Defined in header <cstdio>
int fwrite( const void* buffer, std::size_t size, std::size_t count, std::FILE* stream );

Writes up to count objects from the given array buffer to the output stream stream as if by reinterepreting each object as an array of unsigned char and calling std::fputc size times for each object to write those unsigned chars into stream, in order. The file position indicator for the stream is advanced by the number of characters written.

Si los objetos no son TriviallyCopyable, el comportamiento no está definido .
Original:
If the objects are not TriviallyCopyable, the behavior is undefined.
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Si se produce un error, el valor resultante del indicador de posición del fichero para el flujo es
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If an error occurs, the resulting value of the file position indicator for the stream is
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indeterminate.

Contenido

[editar] Parámetros

buffer -
puntero al objeto primer objeto en la matriz para ser escrito
Original:
pointer to the first object object in the array to be written
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size -
tamaño de cada objeto
Original:
size of each object
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count -
el número de los objetos a ser escrito
Original:
the number of the objects to be written
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[editar] Valor de retorno

Number of objects written successfully, which may be less than count if an error occurred.

Si size o count es cero, fwrite devuelve cero y no realiza ninguna otra acción .
Original:
If size or count is zero, fwrite returns zero and performs no other action.
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[editar] Ejemplo

[editar] Ver también

imprime la salida formateada para stdout, una secuencia de archivo o un tampón
Original:
prints formatted output to stdout, a file stream or a buffer
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(función) [edit]
escribe una cadena de caracteres en una secuencia de archivo
Original:
writes a character string to a file stream
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(función) [edit]
lee un archivo
Original:
reads from a file
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(función) [edit]
C documentation for fwrite