operator<<<div class="t-tr-text">(STD :: basic_ostream)<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">(std::basic_ostream)</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div>

 

C++

Язык

Понятия (концепции)

Утилиты

Строки

Контейнеры

Алгоритмы

Итераторы

Работа с числами

Ввод / вывод

Локализация

Регулярные выражения (C++11)

Атомарные примитивы (C++11)

Потоки (C++11)

 

Библиотеки ввода / вывода

I / O манипуляторов

C-стиль I / O

Буферы Original: Buffers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf

basic_filebuf

basic_stringbuf

strstreambuf (устарело)

Потоки Original: Streams The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Абстракций Original: Abstractions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base

basic_ios

basic_istream

basic_ostream

basic_iostream

Файл I / O Original: File I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_ifstream

basic_ofstream

basic_fstream

Струнный I / O Original: String I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istringstream

basic_ostringstream

basic_stringstream

Массив I / O Original: Array I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

istrstream (устарело)

ostrstream (устарело)

strstream (устарело)

Типы Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

streamoff

streamsize

fpos

Интерфейс Ошибка категории Original: Error category interface The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

iostream_category (C++11)

io_errc (C++11)

 

std::basic_ostream

Глобальные объекты Original: Global objects The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
cout wcout	cerr wcerr	clog wclog
Член функций Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator= (C++11)
Форматированный ввод Original: Formatted input The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::operator<<
Неформатированная вход Original: Unformatted input The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::put
basic_ostream::write
Позиционирование Original: Positioning The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::tellp
basic_ostream::seekp
Разное Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::flush
basic_ostream::swap (C++11)
Член классов Original: Member classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
basic_ostream::sentry
Не являющиеся членами функций Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
operator<<(std::basic_ostream)

 

template< class CharT, class Traits> basic_ostream<CharT,Traits>& operator<<( basic_ostream<CharT,Traits>& os,                                          CharT ch ); template< class CharT, class Traits> basic_ostream<CharT,Traits>& operator<<( basic_ostream<CharT,Traits>& os,                                          char ch ); template< class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,Traits>& os,                                         char ch ); template< class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,Traits>& os,                                         signed char ch ); template< class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,Traits>& os,                                         unsigned char ch );	(1)
template< class CharT, class Traits > basic_ostream<CharT,Traits>& operator<<( basic_ostream<CharT,Traits>& os,                                          const CharT* s ); template< class CharT, class Traits > basic_ostream<CharT,Traits>& operator<<( basic_ostream<CharT,Traits>& os,                                          const char* s ); template< class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,Traits>& os,                                         const char* s ); template< class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,Traits>& os,                                         const signed char* s ); template< class Traits > basic_ostream<char,Traits>& operator<<( basic_ostream<char,traits>& os,                                         const unsigned char* s );	(2)
template< class CharT, class Traits, class T > basic_ostream< charT, traits >& operator<<( basic_ostream<CharT,Traits>&& os,                                             const T& value );	(3)	(начиная с C++11)

Вставляет символ или строку символов.

Original:

Inserts a character or a character string.

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1-2)

отформатированные выходные функции: они начинают исполнения построения объекта типа sentry, который очищает tie()'d выходные буферы при необходимости и проверяет поток ошибок. После завершения строительных работ, если часовой объект возвращается false, эти функции возвращают не пытаясь никаких выходных данных. Если ошибка появляется во время выходных, эти функции вызывают setstate(ios_base::failbit). Если исключение во время выходных, то IOS :: badbit установлен (за исключением подавляется, если exceptions()&badbit) != 0, в этом случае он выдается повторно)

Original:

are formatted output functions: they begin execution by constructing an object of type sentry, which flushes the tie()'d output buffers if necessary and checks the stream errors. After construction, if the sentry object returns false, these functions return without attempting any output. If an error occurs during output, these functions call setstate(ios_base::failbit). If an exception is thrown during output, then ios::badbit is set (the exception is suppressed unless exceptions()&badbit) != 0, in which case it is rethrown)

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1)

Вставляет символ ch. Если тип характера не CharT, он сначала преобразуется с os.widen(ch). Заполнение определяется как если бы Этап 3 num_put::put(). После вставки, width(0) называется.

Original:

Inserts a character ch. If the type of the character is not CharT, it is first converted with os.widen(ch). Padding is determined as if by Stage 3 of num_put::put(). After insertion, width(0) is called.

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2)

Вставки последовательных символов из массива символов, первый элемент, на который указывает s.

Original:

Inserts successive characters from the character array whose first element is pointed to by s.

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• для первой и третьей перегрузки (где CharT соответствует типу ch), точно traits::length(s) символы вставляются.

  Original:

  for the first and third overloads (where CharT matches the type of ch), exactly traits::length(s) characters are inserted.

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• для второго перегрузки, точно std::char_traits<char>::length(s) символы вставляются.

  Original:

  for the second overload, exactly std::char_traits<char>::length(s) characters are inserted.

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• За последние два перегрузок, точно traits::length(reinterpret_cast<const char*>(s)) вставляются.

  Original:

  for the last two overloads, exactly traits::length(reinterpret_cast<const char*>(s)) are inserted.

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Заполнение определяется как если бы Этап 3 num_put::put(). Все персонажи расширен использованием os.widen() перед вставкой. После вставки, width(0) называется.

Original:

Padding is determined as if by Stage 3 of num_put::put(). All characters are widened using os.widen() before insertion. After insertion, width(0) is called.

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3)

Вызывает соответствующие оператора вставки, учитывая RValue ссылкой на объект выходного потока (эквивалент os << value).

Original:

Calls the appropriate insertion operator, given an rvalue reference to an output stream object (equivalent to os << value).

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Параметры

os	-	Выходной поток для вставки данных Original: output stream to insert data to The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ch	-	ссылка на символ для вставки Original: reference to a character to insert The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
s	-	Указатель на строку символов для вставки Original: pointer to a character string to insert The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Возвращаемое значение

st

Пример

#include <iostream>
#include <sstream>
int main()
{
    std::cout << "Hello, world" // the const char* overlaod
              << '\n';          // the char overload
    std::string s = (std::ostringstream() << 1.2).str(); // rvalue overload
    std::cout << s << '\n';
}

Вывод:

Hello, world
1.2

См. также

operator<<	вставками отформатированные данные Original: inserts formatted data The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (public функция-член)