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std::fopen

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< cpp‎ | io‎ | c

 
 
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
 
Defined in header <cstdio>
FILE *fopen( const char *filename, const char *mode );
Öffnet eine Datei filename angegeben und gibt ein Datei-Stream mit dieser Datei verbunden. mode wird verwendet, um den Zugriff auf Dateien-Modus zu ermitteln .
Original:
Opens a file indicated by filename and returns a file stream associated with that file. mode is used to determine the file access mode.
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[Bearbeiten] Parameter

filename -
Dateinamen, um die Datei-Stream zu assoziieren
Original:
file name to associate the file stream to
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mode -
null-terminierte Zeichenkette Bestimmung Dateizugriffsmodus
File access
mode string
Meaning Explanation Action if file
already exists
Action if file
does not exist
"r" read Open a file for reading read from start failure to open
"w" write Create a file for writing destroy contents create new
"a" append Append to a file write to end create new
"r+" read extended Open a file for read/write read from start error
"w+" write extended Create a file for read/write destroy contents create new
"a+" append extended Open a file for read/write write to end create new
File access mode flag "b" can optionally be specified to open a file in binary mode. This flag has effect only on Windows systems.
On the append file access modes, data is written to the end of the file regardless of the current position of the file position indicator.
Original:
null-terminated character string determining file access mode
File access
mode string
Meaning Explanation Action if file
already exists
Action if file
does not exist
"r" read Open a file for reading read from start failure to open
"w" write Create a file for writing destroy contents create new
"a" append Append to a file write to end create new
"r+" read extended Open a file for read/write read from start error
"w+" write extended Create a file for read/write destroy contents create new
"a+" append extended Open a file for read/write write to end create new
File access mode flag "b" can optionally be specified to open a file in binary mode. This flag has effect only on Windows systems.
On the append file access modes, data is written to the end of the file regardless of the current position of the file position indicator.
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[Bearbeiten] Rückgabewert

Geöffnete Datei-Stream auf Erfolg, NULL im Fehlerfall
Original:
Opened file stream on success, NULL on failure
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[Bearbeiten] Siehe auch

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]
Öffnen einer vorhandenen Stream mit einem anderen Namen
Original:
open an existing stream with a different name
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(Funktion) [edit]
C documentation for fopen