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    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>

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    This page has been machine-translated from the English version of the wiki using Google Translate.

    The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

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    <metanoindex/>

     
    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
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    Streams
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    Abstraktionen
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    Abstractions
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    ios_base
    basic_ios
    basic_istream
    basic_ostream
    basic_iostream
    Datei-I / O
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    File I/O
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    basic_ifstream
    basic_ofstream
    basic_fstream
    String I / O
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    String I/O
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    basic_istringstream
    basic_ostringstream
    basic_stringstream
    Array I / O
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    Array I/O
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    istrstream(veraltet)
    ostrstream(veraltet)
    strstream(veraltet)
    Types
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    Types
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    streamoff
    streamsize
    fpos
    Fehler Kategorie Schnittstelle
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    Error category interface
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    iostream_category(C++11)
    io_errc(C++11)
     
    std::basic_ostream
    Globale Objekte
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    Global objects
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    Member-Funktionen
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    Member functions
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    basic_ostream::basic_ostream
    basic_ostream::~basic_ostream
    basic_ostream::operator=(C++11)
    Formatierte Eingabe
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    Formatted input
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    basic_ostream::operator<<
    Unformatierte Eingabe
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    Unformatted input
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    basic_ostream::put
    basic_ostream::write
    Positionierung
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    Positioning
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    basic_ostream::tellp
    basic_ostream::seekp
    Verschiedenes
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    Miscellaneous
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    basic_ostream::flush
    basic_ostream::swap(C++11)
    Mitglied Klassen
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    Member classes
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    basic_ostream::sentry
    Non-Member-Funktionen
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    Non-member functions
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    operator<<(std::basic_ostream)
     
    <tbody> </tbody>
    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) (seit C++11)
    Fügt ein Zeichen oder eine Zeichenkette .
    Original:
    Inserts a character or a character string.
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    1-2)

    formatiert sind Output-Funktionen: Sie beginnen die Ausführung durch den Bau ein Objekt vom Typ sentry, die spült die tie()'d Ausgabepuffer wenn nötig und die Stream-Fehler überprüft. Nach dem Bau, wenn die Wache Objekt kehrt false, geben diese Funktionen, ohne den Versuch keine Ausgabe. Wenn ein Fehler auftritt während der Ausgabe, rufen Sie diese Funktionen setstate(ios_base::failbit). Wenn eine Ausnahme während der Ausgabe ausgelöst wird, dann ios :: badbit gesetzt ist (die Ausnahme unterdrückt sofern exceptions()&badbit) != 0, in welchem ​​Fall es wird erneut ausgelöst)
    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)

    Fügt ein Zeichen ch. Wenn der Typ des Zeichen nicht CharT, wird es zunächst mit os.widen(ch) umgewandelt. Padding ist, als ob von Stage 3 von num_put::put() bestimmt. Nach dem Einführen wird width(0) genannt .
    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)

    Fügt aufeinanderfolgende Zeichen aus dem Zeichen-Array, dessen erstes Element wird durch s hingewiesen .
    Original:
    Inserts successive characters from the character array whose first element is pointed to by s.
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    • für die erste und dritte Überlastungen (soweit CharT entspricht dem Typ des ch), werden exakt traits::length(s) Zeichen eingefügt .
      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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    • für die zweite Überladung, genau std::char_traits<char>::length(s) Zeichen eingefügt .
      Original:
      for the second overload, exactly std::char_traits<char>::length(s) characters are inserted.
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    • in den letzten zwei Überladungen, genau traits::length(reinterpret_cast<const char*>(s)) eingefügt .
      Original:
      for the last two overloads, exactly traits::length(reinterpret_cast<const char*>(s)) are inserted.
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    Padding ist, als ob von Stage 3 von num_put::put() bestimmt. Alle Zeichen werden erweitert mit os.widen() vor dem Einsetzen. Nach dem Einführen wird width(0) genannt .
    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)

    Ruft die entsprechende Ausgabe-Operator, da eine rvalue Verweis auf einen Output-Stream-Objekt (entspricht 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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    Parameter

    os -
    Ausgabestrom, um Daten einzufügen
    Original:
    output stream to insert data to
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    ch -
    verweisen auf ein Zeichen eingefügt werden soll
    Original:
    reference to a character to insert
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    s -
    Zeiger auf eine Zeichenkette einzufügen
    Original:
    pointer to a character string to insert
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    Rückgabewert

    st

    Beispiel

    #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';
}

    Output: 

    Hello, world
1.2

    Siehe auch
    Einsätze formatierte Daten
    Original:
    inserts formatted data
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    (öffentliche Elementfunktion) [edit]