名前空間
変種
操作

std::left, std::right, std::internal

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< cpp | io | manip

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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)
 
入力/出力マニピュレータ
浮動小数点の書式
Original:
Floating-point formatting
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整数フォーマット
Original:
Integer formatting
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ブールの書式
Original:
Boolean formatting
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boolalpha
noboolalpha
フィールド幅と塗りつぶしコントロール
Original:
Field width and fill control
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internal
left
right
その他の書式
Original:
Other formatting
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空白処理
Original:
Whitespace processing
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出力がフラッシュします
Original:
Output flushing
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ステータスフラグ操作
Original:
Status flags manipulation
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時間とお金のI / O
Original:
Time and money I/O
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get_money(C++11)
get_time(C++11)
put_money(C++11)
put_time(C++11)
 
Defined in header <ios>
(1)
(2)
std::ios_base& internal( std::ios_base& str );
 (3)
フィル文字のデフォルトの位置を変更します。 leftとright任意の出力に適用され、internalは、整数、浮動小数点、通貨の出力に適用されます。入力には効果がありません.
Original:
Modifies the default positioning of the fill characters. left and right apply to any output, internal applies to integer, floating-point, and monetary output. Has no effect on input.
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1)
ストリームのadjustfieldを設定strleftかのようにstr.setf(std::ios_base::left, std::ios_base::adjustfield)を呼び出すことによって
Original:
sets the adjustfield of the stream str to left as if by calling str.setf(std::ios_base::left, std::ios_base::adjustfield)
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2)
ストリームのadjustfieldを設定strrightかのようにstr.setf(std::ios_base::right, std::ios_base::adjustfield)を呼び出すことによって
Original:
sets the adjustfield of the stream str to right as if by calling str.setf(std::ios_base::right, std::ios_base::adjustfield)
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3)
ストリームのadjustfieldを設定strinternalかのようにstr.setf(std::ios_base::internal, std::ios_base::adjustfield)を呼び出すことによって
Original:
sets the adjustfield of the stream str to internal as if by calling str.setf(std::ios_base::internal, std::ios_base::adjustfield)
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これは、I / Oのマニピュレータである、そのようなタイプのout << std::leftのいずれout、またはそのようなタイプの任意のstd::basic_ostreamin >> std::leftためinとして式を持つstd::basic_istreamとして式と呼ばれるかもしれない.
Original:
This is an I/O manipulator, it may be called with an expression such as out << std::left for any out of type std::basic_ostream or with an expression such as in >> std::left for any in of type std::basic_istream.
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目次

[編集] パラメータ

str -
I / Oストリームを参照します
Original:
reference to I/O stream
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[編集] 値を返します

str（操作後のストリームへの参照）
Original:
str (reference to the stream after manipulation)
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[編集] 例

#include <iostream>
#include <iomanip>
#include <locale>
int main()
{
    std::cout.imbue(std::locale("en_US.utf8"));
    std::cout << "Left fill:\n" << std::left << std::setfill('*')
              << std::setw(12) << -1.23  << '\n'
              << std::setw(12) << std::hex << std::showbase << 42 << '\n'
              << std::setw(12) << std::put_money(123, true) << "\n\n";
 
    std::cout << "Internal fill:\n" << std::internal
              << std::setw(12) << -1.23  << '\n'
              << std::setw(12) << 42 << '\n'
              << std::setw(12) << std::put_money(123, true) << "\n\n";
 
    std::cout << "Right fill:\n" << std::right
              << std::setw(12) << -1.23  << '\n'
              << std::setw(12) << 42 << '\n'
              << std::setw(12) << std::put_money(123, true) << '\n';
}

Output: 

Left fill:
-1.23*******
0x2a********
USD *1.23***
 
Internal fill:
-*******1.23
0x********2a
USD ****1.23
 
Right fill:
*******-1.23
********0x2a
***USD *1.23

[編集] も参照してください
次の入力/出力フィールドの幅を変更します
Original:
changes the width of the next input/output field
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(機能) [edit]
埋め込み文字を変更します
Original:
changes the fill character
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(関数テンプレート) [edit]
「http://ja.cppreference.com/mwiki/index.php?title=cpp/io/manip/left&oldid=18891」より作成