std::ios_base

<metanoindex/>

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

Iteratori

Libreria matematca

Input/output

Localizzazione

Espressioni regolari (C++11)

Operazioni atomicche (C++11)

Multithreading (C++11)

 

Ingresso / libreria di output

I / O manipolatori

C-style I / O

Buffer Original: Buffers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf

basic_filebuf

basic_stringbuf

strstreambuf (deprecato)

Streams Original: Streams The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Astrazioni Original: Abstractions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base

basic_ios

basic_istream

basic_ostream

basic_iostream

File I / O Original: File I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_ifstream

basic_ofstream

basic_fstream

String I / O Original: String I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istringstream

basic_ostringstream

basic_stringstream

Array I / O Original: Array I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

istrstream (deprecato)

ostrstream (deprecato)

strstream (deprecato)

Tipi Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

streamoff

streamsize

fpos

Errore categoria interfaccia Original: Error category interface The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

iostream_category (C++11)

io_errc (C++11)

 

std::ios_base

Membri funzioni Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base::ios_base

ios_base::~ios_base

Formattazione Original: Formatting The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base::flags

ios_base::setf

ios_base::unsetf

ios_base::precision

ios_base::width

Versioni locali Original: Locales The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base::imbue

ios_base::getloc

Interno di matrice estensibile Original: Internal extensible array The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base::xalloc

ios_base::iword

ios_base::pword

Varie Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base::register_callback

ios_base::sync_with_stdio

Membri classi Original: Member classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base::failure

ios_base::Init

Membri tipi Original: Member types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base::openmode

ios_base::fmtflags

ios_base::iostate

ios_base::seekdir

ios_base::event

ios_base::event_callback

 

<tbody> </tbody>

Elemento definito nell'header <ios>
class ios_base;

Il ios_base classe è una classe polivalente che funge da classe base per tutti gli I / O di classi stream. Mantiene diversi tipi di dati:

Original:

The class ios_base is a multipurpose class that serves as the base class for all I/O stream classes. It maintains several kinds of data:

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1)

informazioni sullo stato: flag di stato del flusso

Original:

state information: stream status flags

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2)

informazioni di controllo: flag che controllano la formattazione di input e sequenze di uscita e le impostazioni internazionali impregnato

Original:

control information: flags that control formatting of both input and output sequences and the imbued locale

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3)

all'ammasso privato: indicizzata struttura estensibile dati che consente sia long e membri void*, che può essere implementato come due matrici a lunghezza arbitraria o un singolo array di due elementi strutture o in un altro contenitore.

Original:

private storage: indexed extensible data structure that allows both long and void* members, which may be implemented as two arbitrary-length arrays or a single array of two-element structs or another container.

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4)

callback: numero arbitrario di funzioni definite dall'utente che possono essere richiesti da infondere (), copyfmt (), e ~ ios_base ()

Original:

callbacks: arbitrary number of user-defined functions to be called from imbue(), copyfmt(), and ~ios_base()

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Applicazione tipica tiene costanti utente corrispondenti a tutti i valori di fmtflags, iostate, openMode e seekdir indicati di seguito, le variabili membri di mantenere la precisione di corrente, larghezza, e le bandiere di formattazione, la maschera di eccezione, lo stato di errore di buffer, un contenitore ridimensionabile tenendo le callback, impostazioni internazionali attualmente impregnata, lo stoccaggio privato, e una variabile statica intero per xalloc ().

Original:

Typical implementation holds member constants corresponding to all values of fmtflags, iostate, openmode, and seekdir shown below, member variables to maintain current precision, width, and formatting flags, the exception mask, the buffer error state, a resizeable container holding the callbacks, the currently imbued locale, the private storage, and a static integer variable for xalloc().

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Membri funzioni

(constructor)	Costruisce l'oggetto Original: constructs the object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (protetto funzione membro)
(destructor) [virtuale]	distrugge l'oggetto Original: destructs the object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico virtuale)
Formattazione Original: Formatting The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
flags	gestisce i flag di formato Original: manages format flags The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
setf	imposta flag specifico formato Original: sets specific format flag The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
unsetf	clears specific format flag (metodo pubblico)
precision	gestisce la precisione decimale di operazioni in virgola mobile Original: manages decimal precision of floating point operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
width	manages field width (metodo pubblico)
Versioni locali Original: Locales The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
imbue	imposta locale Original: sets locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
getloc	restituisce locale corrente Original: returns current locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
Interno di matrice estensibile Original: Internal extensible array The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
xalloc [statico]	restituisce un programma a livello di intero univoco che è sicuro da usare come indice per pword () e iword () Original: returns a program-wide unique integer that is safe to use as index to pword() and iword() The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico statico)
iword	ridimensiona l'ammasso privato e, se necessario, l'accesso all'elemento long in corrispondenza dell'indice specificato Original: resizes the private storage if necessary and access to the long element at the given index The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
pword	ridimensiona l'ammasso privato e, se necessario, l'accesso all'elemento void* in corrispondenza dell'indice specificato Original: resizes the private storage if necessary and access to the void* element at the given index The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
Varie Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
register_callback	registers event callback function (metodo pubblico)
sync_with_stdio [statico]	Permette di scegliere se C + + e C librerie IO sono interoperabili Original: sets whether C++ and C IO libraries are interoperable The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico statico)
Membri classi Original: Member classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
failure	flusso di eccezione Original: stream exception The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (membro pubblico classe)
Init	inizializza oggetti stream standard Original: initializes standard stream objects The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (membro pubblico classe)

Tipi di membri e costanti Original: Member types and constants The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Tipo Original: Type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Explanation
openmode	flusso di tipo modalità di apertura Le costanti sono anche definiti: Constant Original: Constant The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. Explanation app cercano alla fine del flusso prima di ogni scrittura Original: seek to the end of stream before each write The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. binary aperto in modalità binaria Original: open in binary mode The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. in aprire per la lettura Original: open for reading The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. out aperto per la scrittura Original: open for writing The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. trunc scartare il contenuto del flusso durante l'apertura Original: discard the contents of the stream when opening The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. ate cercano di fine flusso subito dopo aperto Original: seek to the end of stream immediately after open The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. Original: stream open mode type The following constants are also defined: Constant Original: Constant The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. Explanation app cercano alla fine del flusso prima di ogni scrittura Original: seek to the end of stream before each write The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. binary aperto in modalità binaria Original: open in binary mode The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. in aprire per la lettura Original: open for reading The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. out aperto per la scrittura Original: open for writing The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. trunc scartare il contenuto del flusso durante l'apertura Original: discard the contents of the stream when opening The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. ate cercano di fine flusso subito dopo aperto Original: seek to the end of stream immediately after open The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (typedef)
fmtflags	formattazione bandiere tipo Le costanti sono anche definiti: Constant Original: Constant The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. Explanation dec utilizzare base decimale per intero I / O Original: use decimal base for integer I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. oct utilizzare ottale base per intero di I / O Original: use octal base for integer I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. hex utilizzare base esadecimale per intero I / O Original: use hexadecimal base for integer I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. basefield dec|oct|hex|0. Utile per mascherare operazioni Original: dec|oct|hex|0. Useful for masking operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. left regolazione sinistra (aggiunge caratteri di riempimento a destra) Original: left adjustment (adds fill characters to the right) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. right giusta regolazione (aggiunge caratteri di riempimento a sinistra) Original: right adjustment (adds fill characters to the left) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. internal regolazione interna (aggiunge caratteri di riempimento fino al punto interno designato) Original: internal adjustment (adds fill characters to the internal designated point) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. adjustfield left|right|internal. Utile per mascherare operazioni Original: left|right|internal. Useful for masking operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. scientific generare tipi in virgola mobile con la notazione scientifica, o la notazione esadecimale se combinato con fisso Original: generate floating point types using scientific notation, or hex notation if combined with fixed The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. fixed generare tipi in virgola mobile con la notazione fissa, o la notazione esadecimale, se combinata con scientifica Original: generate floating point types using fixed notation, or hex notation if combined with scientific The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. floatfield scientific|fixed|(scientific|fixed)|0. Utile per mascherare operazioni Original: scientific|fixed|(scientific|fixed)|0. Useful for masking operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. boolalpha inserire ed estrarre tipo bool in formato alfanumerico Original: insert and extract bool type in alphanumeric format The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. showbase generare un prefisso che indica la base numerica per l'uscita numero intero, richiedono l'indicatore valuta monetaria di I / O Original: generate a prefix indicating the numeric base for integer output, require the currency indicator in monetary I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. showpoint generare un punto decimale carattere incondizionatamente per la virgola mobile il numero di uscita Original: generate a decimal-point character unconditionally for floating-point number output The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. showpos generare un carattere + per non negativo output numerico Original: generate a + character for non-negative numeric output The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. skipws saltare gli spazi iniziali prima di operazioni di input specifici Original: skip leading whitespace before certain input operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. unitbuf lavare l'uscita dopo ogni operazione di uscita Original: flush the output after each output operation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. uppercase sostituire alcune lettere minuscole con le loro uppercase equivalents in alcune operazioni di uscita di uscita Original: replace certain lowercase letters with their uppercase equivalents in certain output output operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. Original: formatting flags type The following constants are also defined: Constant Original: Constant The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. Explanation dec utilizzare base decimale per intero I / O Original: use decimal base for integer I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. oct utilizzare ottale base per intero di I / O Original: use octal base for integer I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. hex utilizzare base esadecimale per intero I / O Original: use hexadecimal base for integer I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. basefield dec|oct|hex|0. Utile per mascherare operazioni Original: dec|oct|hex|0. Useful for masking operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. left regolazione sinistra (aggiunge caratteri di riempimento a destra) Original: left adjustment (adds fill characters to the right) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. right giusta regolazione (aggiunge caratteri di riempimento a sinistra) Original: right adjustment (adds fill characters to the left) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. internal regolazione interna (aggiunge caratteri di riempimento fino al punto interno designato) Original: internal adjustment (adds fill characters to the internal designated point) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. adjustfield left|right|internal. Utile per mascherare operazioni Original: left|right|internal. Useful for masking operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. scientific generare tipi in virgola mobile con la notazione scientifica, o la notazione esadecimale se combinato con fisso Original: generate floating point types using scientific notation, or hex notation if combined with fixed The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. fixed generare tipi in virgola mobile con la notazione fissa, o la notazione esadecimale, se combinata con scientifica Original: generate floating point types using fixed notation, or hex notation if combined with scientific The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. floatfield scientific|fixed|(scientific|fixed)|0. Utile per mascherare operazioni Original: scientific|fixed|(scientific|fixed)|0. Useful for masking operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. boolalpha inserire ed estrarre tipo bool in formato alfanumerico Original: insert and extract bool type in alphanumeric format The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. showbase generare un prefisso che indica la base numerica per l'uscita numero intero, richiedono l'indicatore valuta monetaria di I / O Original: generate a prefix indicating the numeric base for integer output, require the currency indicator in monetary I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. showpoint generare un punto decimale carattere incondizionatamente per la virgola mobile il numero di uscita Original: generate a decimal-point character unconditionally for floating-point number output The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. showpos generare un carattere + per non negativo output numerico Original: generate a + character for non-negative numeric output The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. skipws saltare gli spazi iniziali prima di operazioni di input specifici Original: skip leading whitespace before certain input operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. unitbuf lavare l'uscita dopo ogni operazione di uscita Original: flush the output after each output operation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. uppercase sostituire alcune lettere minuscole con le loro uppercase equivalents in alcune operazioni di uscita di uscita Original: replace certain lowercase letters with their uppercase equivalents in certain output output operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (typedef)
iostate	stato del tipo di flusso Le costanti sono anche definiti: Constant Original: Constant The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. Explanation goodbit nessun errore Original: no error The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. badbit flusso di errore irrecuperabile Original: irrecoverable stream error The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. failbit di input / output non riuscita (errore di formattazione o di estrazione) Original: input/output operation failed (formatting or extraction error) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. eofbit sequenza di input associati ha raggiunto la fine del file Original: associated input sequence has reached end-of-file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. Original: state of the stream type The following constants are also defined: Constant Original: Constant The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. Explanation goodbit nessun errore Original: no error The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. badbit flusso di errore irrecuperabile Original: irrecoverable stream error The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. failbit di input / output non riuscita (errore di formattazione o di estrazione) Original: input/output operation failed (formatting or extraction error) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. eofbit sequenza di input associati ha raggiunto la fine del file Original: associated input sequence has reached end-of-file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (typedef)
seekdir	seeking direction type The following constants are also defined: Constant Original: Constant The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. Explanation beg l'inizio di un flusso Original: the beginning of a stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. end la fine di un corso d'acqua Original: the ending of a stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. cur la posizione corrente del flusso di indicatore di posizione Original: the current position of stream position indicator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (typedef)
event	specifica il tipo di evento Original: specifies event type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (enum)
event_callback	callback tipo di funzione Original: callback function type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (typedef)
Deprecato tipi di membro Original: Deprecated member types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Tipo Original: Type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Explanation
io_state(deprecato)	tipo intero che può essere utilizzato come iostate Original: integer type that may be used like iostate The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
open_mode(deprecato)	tipo intero che può essere utilizzato come openmode Original: integer type that may be used like openmode The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
seek_dir(deprecato)	tipo intero che può essere utilizzato come seekdir Original: integer type that may be used like seekdir The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
streamoff(deprecato)	tipo non specificato che può essere utilizzato come off_type, non necessariamente std::streamoff Original: unspecified type that may be used like off_type, not necessarily std::streamoff The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
streampos(deprecato)	tipo non specificato che può essere utilizzato come pos_type, non necessariamente std::streampos Original: unspecified type that may be used like pos_type, not necessarily std::streampos The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.