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    std::operator<<,>>

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    C++
     
    Strings Bibliothek
    Null-terminierte Strings
    Original:
    Null-terminated strings
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    Byte-Strings
    Multibyte-Strings
    Wide Strings
    Classes
    Original:
    Classes
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    basic_string
    char_traits
     
    std::basic_string
    Member-Funktionen
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    Member functions
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    basic_string::basic_string
    basic_string::operator=
    basic_string::assign
    basic_string::get_allocator
    Elementzugriff zerstört
    Original:
    Element access
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    basic_string::at
    basic_string::operator[]
    basic_string::front(C++11)
    basic_string::back(C++11)
    basic_string::data
    basic_string::c_str
    Iteratoren
    Original:
    Iterators
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    basic_string::begin
    basic_string::cbegin
    (C++11)
    basic_string::end
    basic_string::cend
    (C++11)
    basic_string::rbegin
    basic_string::crbegin
    (C++11)
    basic_string::rend
    basic_string::crend
    (C++11)
    Kapazität
    Original:
    Capacity
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    basic_string::empty
    basic_string::size
    basic_string::length
    basic_string::max_size
    basic_string::reserve
    basic_string::capacity
    basic_string::shrink_to_fit(C++11)
    Operations
    Original:
    Operations
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    basic_string::clear
    basic_string::insert
    basic_string::erase
    basic_string::push_back
    basic_string::pop_back(C++11)
    basic_string::append
    basic_string::operator+=
    basic_string::compare
    basic_string::replace
    basic_string::substr
    basic_string::copy
    basic_string::resize
    basic_string::swap
    Suchen
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    Search
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    basic_string::find
    basic_string::rfind
    basic_string::find_first_of
    basic_string::find_first_not_of
    basic_string::find_last_of
    basic_string::find_last_not_of
    Konstanten
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    Constants
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    basic_string::npos
    Non-Member-Funktionen
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    Non-member functions
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    operator+
    operator==
    operator!=
    operator<
    operator>
    operator<=
    operator>=
    swap(std::basic_string)
    operator<<
    operator>>
    getline
    stoi
    stol
    stoll    		(C++11)
    (C++11)
    (C++11)
    stoul
    stoull    		(C++11)
    (C++11)
    stof
    stod
    stold    		(C++11)
    (C++11)
    (C++11)
    to_string(C++11)
    to_wstring(C++11)
    Helper-Klassen
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    Helper classes
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    hash<std::string>
    hash<std::wstring>
    hash<std::u32string>
    hash<std::u16string>    		(C++11)
     
    definiert in Header <string>
    template<class CharT, class Traits, class Allocator>

    std::basic_ostream<CharT, Traits>&
        operator<<(std::basic_ostream<CharT, Traits>& os,

                   conststd::basic_string<CharT, Traits, Allocator>& str);
    		 (1)
    template<class CharT, class Traits, class Allocator>

    std::basic_istream<CharT, Traits>&
        operator>>(std::basic_istream<CharT, Traits>& is,

                   std::basic_string<CharT, Traits, Allocator>& str);
    		 (2)
    1)
    Zunächst baut eine std::basic_ostream::sentry Objekt, welches spült die Krawatte () 'd Stream falls nötig und Fehler überprüft. Wenn die Wache Objekt zurückgibt false, sofort beendet .
    Original:
    First, constructs a std::basic_ostream::sentry object, which flushes the tie()'d stream if necessary and checks for errors. If the sentry object returns false, exits immediately.
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    Danach, wenn der Posten Objekt zurückkehrt true, bestimmt das Ausgabeformat Polsterung in der gleichen Weise wie die Stufe 3 der num_put::put() .
    Original:
    Afterwards, if the sentry object returns true, determines the output format padding in the same manner as stage 3 of num_put::put().
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    Dann speichert jedes Zeichen aus der resultierenden Sequenz (die Inhalte der str sowie padding) mit dem Ausgang Stream os, als ob durch den Aufruf os.rdbuf()->sputn(seq, n), wo n=std::max(os.width(), str.size())
    Original:
    Then stores each character from the resulting sequence (the contents of str plus padding) to the output stream os as if by calling os.rdbuf()->sputn(seq, n), where n=std::max(os.width(), str.size())
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    Schließlich ruft os.width(0) .
    Original:
    Finally, calls os.width(0).
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    2)
    Zunächst baut eine std::basic_istream::sentry Objekt, welches spült die Krawatte () 'd Stream gegebenenfalls Extrakte und verwirft alle führenden Leerzeichen, wenn die ios_base::skipws Flagge wurde gelöscht, und prüft auf Fehler. Wenn die Wache Objekt zurückgibt false, sofort beendet .
    Original:
    First, constructs a std::basic_istream::sentry object, which flushes the tie()'d stream if necessary, extracts and discards all leading whitespace characters unless the ios_base::skipws flag was cleared, and checks for errors. If the sentry object returns false, exits immediately.
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    Danach, wenn die Wache Objekt kehrt true, löscht str mit str.erase()
    Original:
    Afterwards, if the sentry object returns true, clears str with str.erase()
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    Dann liest Zeichen aus is und fügt sie str wie durch str.append(1, c), bis eine der folgenden Bedingungen wahr wird:
    Original:
    Then reads characters from is and appends them to str as if by str.append(1, c), until one of the following conditions becomes true:
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    • N Zeichen gelesen werden, wo Nis.width() ist, wenn is.width() > 0, sonst N ist str.max_size()
      Original:
      N characters are read, where N is is.width() if is.width() > 0, otherwise N is str.max_size()
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    • die End-of-File-Bedingung tritt im Strom is
      Original:
      the end-of-file condition occurs in the stream is
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    • std::isspace(c,is.getloc()) ist für das nächste Zeichen c in is (dies Leerzeichen bleibt in der Input-Stream) wahr .
      Original:
      std::isspace(c,is.getloc()) is true for the next character c in is (this whitespace character remains in the input stream).
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    Wenn keine Zeichen werden dann extrahiert std::ios::failbit auf is, die std::ios_base::failure werfen kann eingestellt .
    Original:
    If no characters are extracted then std::ios::failbit is set on is, which may throw std::ios_base::failure.
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    Schließlich ruft os.width(0) und zerstört die std::basic_istream::sentry Objekt .
    Original:
    Finally, calls os.width(0) and destroys the std::basic_istream::sentry object.
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    Inhaltsverzeichnis

    [Bearbeiten]Ausnahmen

    1)
    kann std::ios_base::failure werfen, wenn eine Ausnahme während der Ausgabe geworfen wird .
    Original:
    may throw std::ios_base::failure if an exception is thrown during output.
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    2)
    kann std::ios_base::failure werfen, wenn keine Zeichen aus is extrahiert werden (zB der Strom am Ende der Datei, oder aus Leerzeichen only), oder wenn eine Ausnahme während der Eingabe geworfen .
    Original:
    may throw std::ios_base::failure if no characters are extracted from is (e.g the stream is at end of file, or consists of whitespace only), or if an exception is thrown during input.
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    [Bearbeiten]Parameter

    os -
    ein Zeichen Ausgabestream
    Original:
    a character output stream
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    is -
    ein Charakter Eingabestrom
    Original:
    a character input stream
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    str -
    die Zeichenkette eingefügt oder entnommen werden
    Original:
    the string to be inserted or extracted
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    [Bearbeiten]Rückgabewert

    1) os

    2) is

    [Bearbeiten]Beispiel

    #include <iostream>#include <string>   int main(){std::string greeting ="Hello, whirled!"std::cout<< greeting <<'\n';}

    Output: 

    Hello, whirled!
    Von „https://de.cppreference.com/mwiki/index.php?title=cpp/string/basic_string/operator_ltltgtgt&oldid=27843“
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