Namensräume
Varianten

    std::basic_istream::read

    Aus cppreference.com
    < cpp‎ | io‎ | basic istream

    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.

    Click here for the English version of this page

     
    C++
     
    Input / Output-Bibliothek
    I / O-Manipulatoren
    C-style I / O
    Puffern
    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(veraltet)
    Streams
    Original:
    Streams
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    Abstraktionen
    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
    Datei-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
    String 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
    Array 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(veraltet)
    ostrstream(veraltet)
    strstream(veraltet)
    Types
    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
    Fehler Kategorie Schnittstelle
    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_istream
    Globale Objekte
    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.
    cin
    wcin
    Member-Funktionen
    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_istream::basic_istream
    basic_istream::~basic_istream
    basic_istream::operator=(C++11)
    Formatierte Eingabe
    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_istream::operator>>
    Unformatierte Eingabe
    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_istream::get
    basic_istream::peek
    basic_istream::unget
    basic_istream::putback
    basic_istream::getline
    basic_istream::ignore
    basic_istream::read
    basic_istream::readsome
    basic_istream::gcount
    Positionierung
    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_istream::tellg
    basic_istream::seekg
    Verschiedenes
    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_istream::sync
    basic_istream::swap(C++11)
    Mitglied Klassen
    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_istream::sentry
    Non-Member-Funktionen
    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_istream)
     
    basic_istream& read( char_type* s, std::streamsize count );
    Extrahiert Zeichen von stream .
    Original:
    Extracts characters from stream.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    Verhält sich wie UnformattedInputFunction. Nach dem Bau und Prüfung der Schildwache Objekts, extrahiert Zeichen und speichert sie in aufeinander folgenden Aufenthaltsorten der Zeichen-Array, dessen erstes Element wird durch s hingewiesen. Zeichen werden extrahiert und gespeichert werden, bis eine der folgenden Bedingungen auftritt:
    Original:
    Behaves as UnformattedInputFunction. After constructing and checking the sentry object, extracts characters and stores them into successive locations of the character array whose first element is pointed to by s. Characters are extracted and stored until any of the following conditions occurs:
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    • count Zeichen wurden extrahiert und gespeichert
      Original:
      count characters were extracted and stored
      The text has been machine-translated via Google Translate.
      You can help to correct and verify the translation. Click here for instructions.
    • Fileende Bedingung tritt auf der Eingabesequenz (in welchem ​​Fall setstate(failbit|eofbit) genannt .
      Original:
      end of file condition occurs on the input sequence (in which case, setstate(failbit|eofbit) is called.
      The text has been machine-translated via Google Translate.
      You can help to correct and verify the translation. Click here for instructions.

    Inhaltsverzeichnis

    [Bearbeiten]Parameter

    s -
    Zeiger auf den Zeichen-Array, um die Zeichen zu speichern
    Original:
    pointer to the character array to store the characters to
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    count -
    Zahl der zu lesenden Zeichen
    Original:
    number of characters to read
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    [Bearbeiten]Rückgabewert

    *this

    [Bearbeiten]Beispiel

    read () wird oft für binäre verwendeten I / O
    Original:
    read() is often used for binary I/O
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    #include <iostream>#include <string>#include <sstream>#include <cstdint>int main(){std::string bin ={'\x12', '\x12', '\x12', '\x12'};std::istringstream raw(bin);std::uint32_t n; raw.read(reinterpret_cast<char*>(&n), 4);std::cout<<std::hex<<std::showbase<< n <<'\n';}

    Output: 

    0x12121212

    [Bearbeiten]Siehe auch

    }
    Einsätze Blöcken von Zeichen
    Original:
    inserts blocks of characters
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (öffentliche Elementfunktion of std::basic_ostream)[edit]
    Extrakte formatierte Daten
    Original:
    extracts formatted data
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (öffentliche Elementfunktion)[edit]
    extrahiert bereits verfügbaren Blöcke von Zeichen
    Original:
    extracts already available blocks of characters
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (öffentliche Elementfunktion)[edit]
    		 Extrahiere Zeichen
    (öffentliche Elementfunktion)[edit]
    Extrakte Zeichen, bis die gegebene Zeichen gefunden wird
    Original:
    extracts characters until the given character is found
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (öffentliche Elementfunktion)[edit]
    liest aus einer Datei
    Original:
    reads from a file
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (Funktion)[edit]
    Von „https://de.cppreference.com/mwiki/index.php?title=cpp/io/basic_istream/read&oldid=26808“
    close