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std::basic_fstream::open

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< cpp‎ | io‎ | basic fstream

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C++
 
入力/出力ライブラリ
I / Oのマニピュレータ
CスタイルのI / O
バッファ
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(廃止予定)
ストリーム
Original:
Streams
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抽象化
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
ファイルI / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
文字列I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
アレイのI / O
Original:
Array I/O
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istrstream(廃止予定)
ostrstream(廃止予定)
strstream(廃止予定)
タイプ
Original:
Types
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streamoff
streamsize
fpos
エラーカテゴリインターフェース
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_fstream
メンバ関数
Original:
Member functions
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basic_fstream::basic_fstream
basic_fstream::operator=(C++11)
basic_fstream::swap(C++11)
basic_fstream::rdbuf
ファイル操作
Original:
File operations
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basic_fstream::is_open
basic_fstream::open
basic_fstream::close
非メンバ関数
Original:
Non-member functions
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basic_fstream::swap(std::basic_fstream)(C++11)
 
void open( const char *filename,
           ios_base::openmode mode = ios_base::in|ios_base::out );
void open( const std::string &filename,                                  
           ios_base::openmode mode = ios_base::in|ios_base::out );
 (C++11およびそれ以降)
ファイルストリームで開き、仲間はファイル。失敗した場合に、成功またはclear()にsetstate(failbit)呼び出し.
Original:
Opens and associates file with the file stream. Calls clear() on success or setstate(failbit) on failure.
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最初のバージョンでは、効果的にrdbuf()->open(filename, mode).呼び出します
Original:
The first version effectively calls rdbuf()->open(filename, mode).
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2番目のバージョンでは、効果的にopen(filename.c_str(), mode)呼び出し.
Original:
The second version effectively calls open(filename.c_str(), mode).
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目次

[編集] パラメータ

filename -
ファイルの名前を開くことができます
Original:
the name of the file to be opened
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mode -
ストリームのオープンモードを指定します。それはビットマスク型ですが、以下の定数が定義されています：
定数
Original:
Constant
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 Explanation
app
各書き込みの前にストリームの末尾にシーク
Original:
seek to the end of stream before each write
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binary
バイナリモードで開きます
Original:
open in binary mode
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in
読み込み用に開きます
Original:
open for reading
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out
書き込み用に開きます
Original:
open for writing
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trunc
開封ストリームの内容を破棄します
Original:
discard the contents of the stream when opening
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ate
すぐにオープンした後、ストリームの末尾にシーク
Original:
seek to the end of stream immediately after open
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Original:
specifies stream open mode. It is bitmask type, the following constants are defined:
定数
Original:
Constant
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 Explanation
app
各書き込みの前にストリームの末尾にシーク
Original:
seek to the end of stream before each write
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binary
バイナリモードで開きます
Original:
open in binary mode
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in
読み込み用に開きます
Original:
open for reading
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out
書き込み用に開きます
Original:
open for writing
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trunc
開封ストリームの内容を破棄します
Original:
discard the contents of the stream when opening
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ate
すぐにオープンした後、ストリームの末尾にシーク
Original:
seek to the end of stream immediately after open
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[編集] 値を返します

（なし）
Original:
(none)
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[編集] 例

This section is incomplete
Reason: no example

[編集] も参照してください

 ストリームに関連付けられたファイルがあるかチェックします
(パブリックメンバ関数) [edit]
関連付けられているファイルを閉じます
Original:
closes the associated file
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(パブリックメンバ関数) [edit]
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