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C-style file input/output

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< cpp‎ | io


 
 
Input / Output-Bibliothek
I / O-Manipulatoren
C-style I / O
Puffern
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(veraltet)
Streams
Original:
Streams
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Abstraktionen
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
Datei-I / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
String I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Array I / O
Original:
Array I/O
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istrstream(veraltet)
ostrstream(veraltet)
strstream(veraltet)
Types
Original:
Types
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streamoff
streamsize
fpos
Fehler Kategorie Schnittstelle
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
C-style I / O
Funktionen
Original:
Functions
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Dateizugriff
Original:
File access
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Direkte Eingabe / Ausgabe
Original:
Direct input/output
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fread
fwrite
Unformatierte Eingang / Ausgang
Original:
Unformatted input/output
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Formatierte Eingabe / Ausgabe
Original:
Formatted input/output
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Datei Positionierung
Original:
File positioning
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ftell
fgetpos
fseek
fsetpos
rewind
Fehlerbehandlung
Original:
Error handling
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clearerr
feof
ferror
perror
Operationen auf Dateien
Original:
Operations on files
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remove
rename
tmpfile
tmpnam
 
Die CI / O Teilmenge der C + +-Standard-Bibliothek implementiert C-style-Stream Input / Output-Operationen. Die <cstdio> Header bietet generische Dateioperation Unterstützung und Versorgung Funktionen mit schmalen und Multibyte-Zeichen Input / Output-Funktionen und die <cwchar> Header bietet Funktionen mit Wide-Character Input / Output-Funktionen .
Original:
The C I/O subset of the C++ standard library implements C-style stream input/output operations. The <cstdio> header provides generic file operation support and supplies functions with narrow and multibyte character input/output capabilities, and the <cwchar> header provides functions with wide character input/output capabilities.
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C-Streams sind Objekte vom Typ std::FILE, die nur abgerufen und durch Pointer vom Typ std::FILE* (Hinweis manipuliert werden kann: Während es möglich sein kann, um eine lokale Objekt vom Typ std::FILE durch Dereferenzierung und Kopieren eines gültigen FILE* erstellen, indem Sie die Adresse einer solchen Kopie in die I / O-Funktionen ist undefiniertes Verhalten). Jede C-Strom wird mit einem externen physikalischen Gerät (Datei, Standardeingabestream, Drucker, seriellen Port, usw.) zugeordnet .
Original:
C streams are objects of type std::FILE that can only be accessed and manipulated through pointers of type std::FILE* (Note: while it may be possible to create a local object of type std::FILE by dereferencing and copying a valid FILE*, using the address of such copy in the I/O functions is undefined behavior). Each C stream is associated with an external physical device (file, standard input stream, printer, serial port, etc).
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C-Streams können sowohl für unformatierte und formatierte Ein-und Ausgang genutzt werden. Sie sind locale-empfindlich und können breit / Multibyte Konvertierungen wie nötig durchzuführen. Im Gegensatz zu C + +-Streams, wo jeder Strom mit eigenen locale verbunden ist, Zugriff auf alle C-Streams die gleiche locale Objekt: dem zuletzt installiert mit std::setlocale .
Original:
C streams can be used for both unformatted and formatted input and output. They are locale-sensitive and may perform wide/multibyte conversions as necessary. Unlike C++ streams, where each stream is associated with its own locale, all C streams access the same locale object: the one most recently installed with std::setlocale.
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Neben dem System-spezifischen Informationen, die auf das Gerät zugreifen (zB POSIX file descriptor) hält jeder C-Stream-Objekt die folgenden:
Original:
Besides the system-specific information necessary to access the device (e.g. a POSIX file descriptor), each C stream object holds the following:
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1)
Zeichenbreite: schmal oder breit
Original:
Character width: narrow or wide
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2)
Pufferung Zustand: unbuffered, Line-gepuffert, Fully Buffered .
Original:
Buffering state: unbuffered, line-buffered, fully buffered.
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3)
Der Puffer, der durch einen externen, von Benutzern bereitgestellte Puffer ersetzt werden können .
Original:
The buffer, which may be replaced by an external, user-provided buffer.
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4)
I / O-Modus: Eingangs-, Ausgangs-oder update (Eingang und Ausgang) .
Original:
I/O mode: input, output, or update (both input and output).
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5)
Binär / Text-Modus-Anzeige .
Original:
Binary/text mode indicator.
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6)
End-of-file Statusanzeige .
Original:
End-of-file status indicator.
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7)
Fehler Statusanzeige .
Original:
Error status indicator.
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8)
Dateipositionszeigers (ein Objekt vom Typ std::fpos_t), die, für breite Zeichenströme, umfasst die Parse-Zustand (ein Objekt vom Typ mbstate_t) .
Original:
File position indicator (an object of type std::fpos_t), which, for wide character streams, includes the parse state (an object of type mbstate_t).
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Inhaltsverzeichnis

[Bearbeiten] Funktionen

Dateizugriff
Original:
File access
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öffnet eine Datei
Original:
opens a file
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(Funktion) [edit]
Öffnen einer vorhandenen Stream mit einem anderen Namen
Original:
open an existing stream with a different name
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(Funktion) [edit]
schließt eine Datei
Original:
closes a file
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(Funktion) [edit]
synchronisiert einen Ausgabe-Stream mit der eigentlichen Datei
Original:
synchronizes an output stream with the actual file
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(Funktion) [edit]
schaltet ein Datei-Stream zwischen wide character I / O und engen Charakter I / O
Original:
switches a file stream between wide character I/O and narrow character I/O
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(Funktion) [edit]
setzt den Puffer für einen Datei-Stream
Original:
sets the buffer for a file stream
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(Funktion) [edit]
setzt den Puffer und dessen Größe für eine Datei-Stream
Original:
sets the buffer and its size for a file stream
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(Funktion) [edit]
Direkte Eingabe / Ausgabe
Original:
Direct input/output
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liest aus einer Datei
Original:
reads from a file
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(Funktion) [edit]
eine Datei schreibt
Original:
writes to a file
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(Funktion) [edit]
Unformatierte Eingang / Ausgang
Original:
Unformatted input/output
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Schmale Charakter
Original:
Narrow character
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bekommt einen Charakter aus einem Datei-Stream
Original:
gets a character from a file stream
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(Funktion) [edit]
erhält eine Zeichenkette aus einem Datei-Stream
Original:
gets a character string from a file stream
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(Funktion) [edit]
Schreibt ein Zeichen in einem Datei-Stream
Original:
writes a character to a file stream
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(Funktion) [edit]
schreibt eine Zeichenkette in einer Datei-Stream
Original:
writes a character string to a file stream
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(Funktion) [edit]
liest ein Zeichen aus stdin
Original:
reads a character from stdin
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(Funktion) [edit]
liest eine Zeichenkette aus stdin
Original:
reads a character string from stdin
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(Funktion) [edit]
Schreibt ein Zeichen in stdout
Original:
writes a character to stdout
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(Funktion) [edit]
schreibt eine Zeichenkette stdout
Original:
writes a character string to stdout
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(Funktion) [edit]
setzt ein Zeichen zurück in ein Datei-Stream
Original:
puts a character back into a file stream
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(Funktion) [edit]
Wide character
Original:
Wide character
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erhält eine breite Zeichen aus einem Datei-Stream
Original:
gets a wide character from a file stream
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(Funktion) [edit]
erhält eine breite Zeichenfolge aus einem Datei-Stream
Original:
gets a wide string from a file stream
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(Funktion) [edit]
schreibt eine breite Zeichen in eine Datei-Stream
Original:
writes a wide character to a file stream
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(Funktion) [edit]
schreibt ein breites String in eine Datei-Stream
Original:
writes a wide string to a file stream
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(Funktion) [edit]
liest eine breite Zeichen aus stdin
Original:
reads a wide character from stdin
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(Funktion) [edit]
schreibt eine breite Zeichen stdout
Original:
writes a wide character to stdout
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(Funktion) [edit]
stellt eine breite Zeichen zurück in ein Datei-Stream
Original:
puts a wide character back into a file stream
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(Funktion) [edit]
Formatierte Eingabe / Ausgabe
Original:
Formatted input/output
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Narrow / Multibyte-Zeichens
Original:
Narrow/multibyte character
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liest formatierten Eingaben von stdin, eine Datei-Strom oder einen Puffer
Original:
reads formatted input from stdin, a file stream or a buffer
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(Funktion) [edit]
(C++11)
(C++11)
(C++11)
liest formatierte Eingabe von stdin, ein Datei-Stream oder ein buffer
mit variabler Argumentliste
Original:
reads formatted input from stdin, a file stream or a buffer
using variable argument list
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(Funktion) [edit]
Drucke formatiert Ausgabe an stdout, eine Datei-Strom oder einen Puffer
Original:
prints formatted output to stdout, a file stream or a buffer
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(Funktion) [edit]
Drucke formatierte Ausgabe auf stdout, ein Datei-Stream oder ein buffer
mit variabler Argumentliste
Original:
prints formatted output to stdout, a file stream or a buffer
using variable argument list
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(Funktion) [edit]
Wide character
Original:
Wide character
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liest formatierten breiten Zeicheneingabe von stdin, eine Datei-Strom oder einen Puffer
Original:
reads formatted wide character input from stdin, a file stream or a buffer
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(Funktion) [edit]
(C++11)
(C++11)
(C++11)
liest formatierte breite Zeicheneingabe von stdin eine Datei stream
oder einen Puffer mit variabler Argumentliste
Original:
reads formatted wide character input from stdin, a file stream
or a buffer using variable argument list
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(Funktion) [edit]
Drucke formatiert Breitzeichen Ausgang stdout, ein Datei-Stream oder einen Puffer
Original:
prints formatted wide character output to stdout, a file stream or a buffer
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(Funktion) [edit]
Drucke formatiert Breitzeichen Ausgang stdout eine Datei stream
oder einen Puffer mit variabler Argumentliste
Original:
prints formatted wide character output to stdout, a file stream
or a buffer using variable argument list
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(Funktion) [edit]
Datei Positionierung
Original:
File positioning
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liefert die aktuelle Position in der Datei-Anzeige
Original:
returns the current file position indicator
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(Funktion) [edit]
erhält die Datei Stellungsanzeige
Original:
gets the file position indicator
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(Funktion) [edit]
verschiebt die Datei Positionsanzeiger zu einer bestimmten Position in einer Datei
Original:
moves the file position indicator to a specific location in a file
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(Funktion) [edit]
verschiebt die Datei Positionsanzeiger zu einer bestimmten Position in einer Datei
Original:
moves the file position indicator to a specific location in a file
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(Funktion) [edit]
verschiebt die Datei Stellungsanzeige zum Anfang in einer Datei
Original:
moves the file position indicator to the beginning in a file
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(Funktion) [edit]
Fehlerbehandlung
Original:
Error handling
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löscht Fehler
Original:
clears errors
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(Funktion) [edit]
Prüfungen für die End-of-Datei
Original:
checks for the end-of-file
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(Funktion) [edit]
Prüfungen für eine Datei Fehler
Original:
checks for a file error
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(Funktion) [edit]
zeigt eine Zeichenfolge entspricht der aktuellen Fehler stderr
Original:
displays a character string corresponding of the current error to stderr
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(Funktion) [edit]
Operationen auf Dateien
Original:
Operations on files
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löscht eine Datei
Original:
erases a file
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(Funktion) [edit]
benennt eine Datei
Original:
renames a file
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(Funktion) [edit]
erstellt und öffnet eine temporäre, automatische Entfernen Datei
Original:
creates and opens a temporary, auto-removing file
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(Funktion) [edit]
gibt einen eindeutigen Dateinamen
Original:
returns a unique filename
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(Funktion) [edit]

[Bearbeiten] Types

Defined in header <cstdio>
Type
Original:
Type
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Definition
FILE
Art, halten können alle erforderlichen Informationen, um eine CI / O-Stream steuern
Original:
type, capable of holding all information needed to control a C I/O stream
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fpos_t
Typ, der fähig eindeutigen Spezifizieren einer Position in einem Bild
Original:
type, capable of uniquely specifying a position in a file
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[Bearbeiten] Makros

Defined in header <cstdio>
stdin
stdout
stderr
Ausdruck des Typs FILE* mit dem Eingang stream
expression vom Typ FILE* mit dem Ausgang stream
expression vom Typ FILE* mit der Fehlerausgabe-Stream zugeordnet zugeordnet
Original:
expression of type FILE* associated with the input stream
expression of type FILE* associated with the output stream
expression of type FILE* associated with the error output stream
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(Makro konstant)
EOF
Ganzzahlkonstantenausdruck vom Typ int und negativen Wert
Original:
integer constant expression of type int and negative value
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(Makro konstant)
FOPEN_MAX
Anzahl der Dateien, die gleichzeitig geöffnet sein können
Original:
number of files that can be open simultaneously
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(Makro konstant)
FILENAME_MAX
Größe für ein Array von char die längste unterstützt Dateinamen zu halten benötigt
Original:
size needed for an array of char to hold the longest supported file name
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(Makro konstant)
BUFSIZ
Größe des Puffers durch std::setbuf verwendet
Original:
size of the buffer used by std::setbuf
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(Makro konstant)
_IOFBF
_IOLBF
_IONBF
Argument std::setbuf für vollständig I / O
argument um std::setbuf Angabe zeilengepufferte gepufferte I / O
argument um std::setbuf Angabe unbuffered I / O
Original:
argument to std::setbuf indicating fully buffered I/O
argument to std::setbuf indicating line buffered I/O
argument to std::setbuf indicating unbuffered I/O
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(Makro konstant)
SEEK_SET
SEEK_CUR
SEEK_END
Argument std::fseek Angabe sucht ab Anfang des file
argument um std::fseek Angabe sucht aus der aktuellen Datei position
argument um std::fseek anzeigt suchen ab Ende der Datei
Original:
argument to std::fseek indicating seeking from beginning of the file
argument to std::fseek indicating seeking from the current file position
argument to std::fseek indicating seeking from end of the file
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(Makro konstant)
TMP_MAX
maximale Anzahl der eindeutigen Dateinamen, die von std::tmpnam erzeugt werden kann
Original:
maximum number of unique filenames that can be generated by std::tmpnam
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(Makro konstant)
L_tmpnam
Größe für ein Array von Zeichen benötigt, um das Ergebnis der std::tmpnam halten
Original:
size needed for an array of char to hold the result of std::tmpnam
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(Makro konstant)