std::basic_istream – cppreference.com
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Das Klassen-Template basic_istream bietet Unterstützung für High Level Eingang Operationen auf Zeichen-Streams. Die unterstützten Operationen gehören formatiert Eingang (zB Integer-Werte oder Leerzeichen getrennte Zeichen und Zeichenketten) und unformatierte Eingabe (z. B. Roh-Zeichen und Zeichen-Arrays). Diese Funktionalität ist in Bezug auf die Schnittstelle von der zugrunde liegenden basic_streambuf Klasse, durch die basic_ios Basisklasse zugegriffen vorgesehenen Verfahren durchgeführt. Die einzige nicht-ererbte Datenmember basic_istream, in den meisten Implementierungen ist der Wert durch
zurückgegeben .
Original:
The class template basic_istream provides support for high level input operations on character streams. The supported operations include formatted input (e.g. integer values or whitespace-separated characters and characters strings) and unformatted input (e.g. raw characters and character arrays). This functionality is implemented in terms of the interface provided by the underlying basic_streambuf class, accessed through the basic_ios base class. The only non-inherited data member of basic_istream, in most implementations, is the value returned by
.
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Inheritance diagram
Zwei Spezialisierungen für gemeinsame Charakter-Typen sind definiert:
Original:
Two specializations for common character types are defined:
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definiert in Header | |
Type Original: Type The text has been machine-translated via Google Translate. |
Definition |
istream
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basic_istream<char>
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wistream
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basic_istream<wchar_t>
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Globale Objekte
Zwei globale basic_istream Aufgaben werden durch die Standard-Bibliothek zur Verfügung gestellt .
Original:
Two global basic_istream objects are provided by the standard library.
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liest aus der Standard-C-Input-Stream stdin Original: reads from the standard C input stream stdin The text has been machine-translated via Google Translate. | |
Mitglied Typen
Mitglied Typ Original: Member type The text has been machine-translated via Google Translate. |
Definition |
char_type
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CharT[edit]
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traits_type
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Traits[edit]
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int_type
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Traits::int_type[edit]
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pos_type
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Traits::pos_type[edit]
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off_type
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Traits::off_type[edit]
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Member-Funktionen
}
Baut das Objekt Original: constructs the object The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
[virtuell] |
zerstört sich das Objekt Original: destructs the object The text has been machine-translated via Google Translate. (virtuellen öffentlichen Member-Funktion) [edit] |
(C++11) |
ersetzt das Puffer-Objekt Original: replaces the buffer object The text has been machine-translated via Google Translate. (geschützt Member-Funktion) [edit] |
Formatierte Eingabe Original: Formatted input The text has been machine-translated via Google Translate. | |
Extrakte formatierte Daten Original: extracts formatted data The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
Unformatierte Eingabe Original: Unformatted input The text has been machine-translated via Google Translate. | |
| Extrahiere Zeichen (öffentliche Elementfunktion) [edit] | |
liest das nächste Zeichen ohne es zu extrahieren Original: reads the next character without extracting it The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
unextracts ein Zeichen Original: unextracts a character The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
setzt Zeichen in Input-Stream Original: puts character into input stream The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
Extrakte Zeichen, bis die gegebene Zeichen gefunden wird Original: extracts characters until the given character is found The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
Extrakte aus und verwirft Zeichen, bis die gegebene Zeichen gefunden wird Original: extracts and discards characters until the given character is found The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
extrahiert Blöcken von Zeichen Original: extracts blocks of characters The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
extrahiert bereits verfügbaren Blöcke von Zeichen Original: extracts already available blocks of characters The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
gibt die Anzahl der Zeichen, die letzten unformatierte Eingabe-Operation extrahiert Original: returns number of characters extracted by last unformatted input operation The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
Positionierung Original: Positioning The text has been machine-translated via Google Translate. | |
liefert den Eingang Stellungsanzeige Original: returns the input position indicator The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
| sets the input position indicator (öffentliche Elementfunktion) [edit] | |
Verschiedenes Original: Miscellaneous The text has been machine-translated via Google Translate. | |
synchronisiert mit dem zugrunde liegenden Speicher Original: synchronizes with the underlying storage device The text has been machine-translated via Google Translate. (öffentliche Elementfunktion) [edit] | |
(C++11) |
Swaps Strom-Objekten, mit Ausnahme der zugehörigen Puffer Original: swaps stream objects, except for the associated buffer The text has been machine-translated via Google Translate. (geschützt Member-Funktion) [edit] |
Mitglied Klassen
| implements basic logic for preparation of the stream for input operations (öffentlichen Member der Klasse) [edit] | |
Non-Member-Funktionen
extrahiert Zeichen und Zeichen-Arrays Original: extracts characters and character arrays The text has been machine-translated via Google Translate. (Funktions-Template) [edit] | |
Inherited from std::basic_ios
Member types
Mitglied Typ Original: Member type The text has been machine-translated via Google Translate. |
Definition |
char_type
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CharT
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traits_type
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Traits
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int_type
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Traits::int_type
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pos_type
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Traits::pos_type
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off_type
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Traits::off_type
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}
Funktionen des Staates Original: State functions The text has been machine-translated via Google Translate. | |
prüft, ob keine Fehler aufgetreten, dh I / O-Operationen zur Verfügung stehen Original: checks if no error has occurred i.e. I/O operations are available The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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prüft, ob am Ende der Datei erreicht wurde Original: checks if end-of-file has been reached The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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prüft, ob ein behebbarer Fehler aufgetreten Original: checks if a recoverable error has occurred The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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prüft, ob ein nicht behebbarer Fehler aufgetreten ist Original: checks if a non-recoverable error has occurred The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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prüft, ob ein Fehler aufgetreten ist (Synonym fail()) Original: The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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(bis C + +11) |
überprüft, ob kein Fehler aufgetreten ist (Synonym Original: checks if no error has occurred (synonym of The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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| gibt Statusflaggen (öffentliche Elementfunktion of std::basic_ios) [edit]
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setzt Staatsflaggen Original: sets state flags The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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löscht Fehler und eof Fahnen Original: clears error and eof flags The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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Formatierung Original: Formatting The text has been machine-translated via Google Translate. | |
Kopien Formatierungsinformationen Original: copies formatting information The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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verwaltet die Füllzeichen Original: manages the fill character The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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Verschiedenes Original: Miscellaneous The text has been machine-translated via Google Translate. | |
| manages exception mask (öffentliche Elementfunktion of std::basic_ios) [edit]
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Setzt die Locale Original: sets the locale The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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verwaltet verbundenen Strom-Puffer Original: manages associated stream buffer The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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verwaltet gebunden Stream Original: manages tied stream The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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verengt Zeichen Original: narrows characters The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::basic_ios) [edit]
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| widens characters (öffentliche Elementfunktion of std::basic_ios) [edit]
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Inherited from std::ios_base
Member functions
Formatierung Original: Formatting The text has been machine-translated via Google Translate. | |
verwaltet Format Fahnen Original: manages format flags The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::ios_base) [edit]
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setzt bestimmten Format Flagge Original: sets specific format flag The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::ios_base) [edit]
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| clears specific format flag (öffentliche Elementfunktion of std::ios_base) [edit]
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verwaltet Nachkommastellen von Fließkomma-Operationen Original: manages decimal precision of floating point operations The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::ios_base) [edit]
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| manages field width (öffentliche Elementfunktion of std::ios_base) [edit]
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Locales Original: Locales The text has been machine-translated via Google Translate. | |
setzt locale Original: sets locale The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::ios_base) [edit]
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kehrt momentanen Locale Original: returns current locale The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::ios_base) [edit]
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Interne erweiterbare Array Original: Internal extensible array The text has been machine-translated via Google Translate. | |
[statisch] |
kehrt ein Programm-weit eindeutige Zahl, die sicher als Index PWord () und iword () verwenden 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. (public static Elementfunktion of std::ios_base) [edit]
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die Größe der privaten Lagerhaltung bei Bedarf und Zugang zum Original: resizes the private storage if necessary and access to the The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::ios_base) [edit]
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die Größe der privaten Lagerhaltung bei Bedarf und Zugang zum Original: resizes the private storage if necessary and access to the The text has been machine-translated via Google Translate. (öffentliche Elementfunktion of std::ios_base) [edit]
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Verschiedenes Original: Miscellaneous The text has been machine-translated via Google Translate. | |
| registers event callback function (öffentliche Elementfunktion of std::ios_base) [edit]
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[statisch] |
legt fest, ob C + + und C IO Libraries interoperabel sind Original: sets whether C++ and C IO libraries are interoperable The text has been machine-translated via Google Translate. (public static Elementfunktion of std::ios_base) [edit]
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Mitglied Klassen Original: Member classes The text has been machine-translated via Google Translate. | |
Stream Ausnahme Original: stream exception The text has been machine-translated via Google Translate. (öffentlichen Member der Klasse of std::ios_base) [edit]
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initialisiert Standard-Stream-Objekten Original: initializes standard stream objects The text has been machine-translated via Google Translate. (öffentlichen Member der Klasse of std::ios_base) [edit]
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Mitglied Typen und Konstanten Original: Member types and constants The text has been machine-translated via Google Translate. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Type Original: Type The text has been machine-translated via Google Translate. |
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Stream offenen Modus-Typ Die folgenden Konstanten sind ebenfalls definiert:
Original: stream open mode type The following constants are also defined:
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Formatierung flags Typ Die folgenden Konstanten sind ebenfalls definiert:
Original: formatting flags type The following constants are also defined:
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Stand der Stream-Typ Die folgenden Konstanten sind ebenfalls definiert:
Original: state of the stream type The following constants are also defined:
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| seeking direction type
The following constants are also defined:
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legt Event-Typ Original: specifies event type The text has been machine-translated via Google Translate. (enum) [edit] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Callback-Funktion aus Original: callback function type The text has been machine-translated via Google Translate. (typedef) [edit] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||