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std::cout, std::wcout

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< cpp‎ | io

 
 
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_ostream
グローバルオブジェクト
Original:
Global objects
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cout
wcout
メンバ関数
Original:
Member functions
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basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator=(C++11)
書式付き入力
Original:
Formatted input
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basic_ostream::operator<<
書式なし入力
Original:
Unformatted input
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basic_ostream::put
basic_ostream::write
ポジショニング
Original:
Positioning
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basic_ostream::tellp
basic_ostream::seekp
その他
Original:
Miscellaneous
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basic_ostream::flush
basic_ostream::swap(C++11)
メンバークラス
Original:
Member classes
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basic_ostream::sentry
非メンバ関数
Original:
Non-member functions
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operator<<(std::basic_ostream)
 
Defined in header <iostream>
extern std::ostream cout;
(1)
extern std::wostream wcout;
(2)
グローバルオブジェクトstd::cout、標準C出力ストリームに関連付けられている実装定義型(std::wcout由来)のストリームバッファへstd::streambuf制御出力stdout.
Original:
The global objects std::cout and std::wcout control output to a stream buffer of implementation-defined type (derived from std::streambuf), associated with the standard C output stream stdout.
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これらのオブジェクトは、静的オブジェクトの最初のコンストラクタが呼び出される前に建設されることが保証されて、彼らは、それがユーザーコードでstd::coutに書き込みすることは常に可能であるように、静的オブジェクトの最後のデストラクタよりも長生きすることが保証されています.
Original:
These objects are guaranteed to be constructed before the first constructor of a static object is called and they are guaranteed to outlive the last destructor of a static object, so that it is always possible to write to std::cout in user code.
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sync_with_stdio(false)が発行されていない限り、それは同時にフォーマットし、フォーマットされていない出力の両方に複数のスレッドからこれらのオブジェクトにアクセスしても安全です.
Original:
Unless sync_with_stdio(false) has been issued, it is safe to concurrently access these objects from multiple threads for both formatted and unformatted output.
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いったん初期化されると、std::coutはタイです() 'dにstd::cinstd::wcoutのtie()である'std::wcinのd、std::cin上の任意の入力操作(std::cout.flush()のコンストラクタ経由)std::basic_istream::sentryを実行することを意味.
Original:
Once initialized, std::cout is tie()'d to std::cin and std::wcout is tie()'d to std::wcin, meaning that any input operation on std::cin executes std::cout.flush() (via std::basic_istream::sentry's constructor).
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いったん初期化されると、std::coutも)(TIEさ 'dにstd::cerrstd::wcoutあるのtie()' dにstd::wcerrstd::cerr上の任意の出力操作はstd::cout.flush()std::basic_ostream::sentryのコンストラクタ経由)(C + + 11以来)を実行することを意味している
Original:
Once initialized, std::cout is also tie()'d to std::cerr and std::wcout is tie()'d to std::wcerr,, meaning that any output operation on std::cerr executes std::cout.flush() (via std::basic_ostream::sentry's constructor) (C + + 11以来)
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[編集]

#include <iostream>
struct Foo {
    int n;
    Foo() {
       std::cout << "static constructor\n";
    }
    ~Foo() {
       std::cout << "static destructor\n";
    }
};
Foo f; // static object
int main()
{
    std::cout << "main function\n";
}

Output:

static constructor
main function
static destructor

[編集] も参照してください

標準ストリームオブジェクトを初期化します
Original:
initializes standard stream objects
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(publicメンバクラスof std::ios_base) [edit]
標準Cエラーストリームstderr
(グローバルオブジェクト)に書き込みます
Original:
writes to the standard C error stream stderr
(グローバルオブジェクト)
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[edit]
cout
wcout
標準C出力ストリームstdout
(グローバルオブジェクト)に書き込みます
Original:
writes to the standard C output stream stdout
(グローバルオブジェクト)
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[edit]