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    std::basic_istream::ignore

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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_istream
    Globale Objekte
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    Global objects
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    cin
    wcin
    Member-Funktionen
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    Member functions
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    basic_istream::basic_istream
    basic_istream::~basic_istream
    basic_istream::operator=(C++11)
    Formatierte Eingabe
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    Formatted input
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    basic_istream::operator>>
    Unformatierte Eingabe
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    Unformatted input
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    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
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    Positioning
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    basic_istream::tellg
    basic_istream::seekg
    Verschiedenes
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    Miscellaneous
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    basic_istream::sync
    basic_istream::swap(C++11)
    Mitglied Klassen
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    Member classes
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    basic_istream::sentry
    Non-Member-Funktionen
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    Non-member functions
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    operator>>(std::basic_istream)
     
    <tbody> </tbody>
    basic_istream& ignore( std::streamsize count = 1, int_type delim = Traits::eof() );
    Auszüge und verwirft Zeichen aus dem Eingabe-Stream bis einschließlich delim .
    Original:
    Extracts and discards characters from the input stream until and including delim.
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    Verhält sich wie UnformattedInputFunction. Nach dem Bau und Prüfung der Schildwache Objekts, extrahiert Zeichen aus dem Stream und verwirft sie, bis eine der folgenden Bedingungen erfüllt ist:
    Original:
    Behaves as UnformattedInputFunction. After constructing and checking the sentry object, extracts characters from the stream and discards them until any one of the following conditions occurs:
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    • count Zeichen extrahiert wurden (dieser Test ist in dem speziellen Fall deaktiviert, wenn count std::numeric_limits<std::streamsize>::max()
      Original:
      count characters were extracted (this test is disabled in the special case when count equals std::numeric_limits<std::streamsize>::max()
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    • Ende der Datei Bedingungen auftritt in der Eingangssequenz (in diesem Fall die Funktion aufruft setstate(eofbit)
      Original:
      end of file conditions occurs in the input sequence (in which case the function calls setstate(eofbit)
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    • Das nächste verfügbare Zeichen c in der Eingangssequenz ist gleich delim wie durch Traits::eq_int_type(Traits::to_int_type(c), delim) bestimmt. Das Trennzeichen extrahiert und verworfen (dieser Test wird gesperrt, wenn delim wird Traits::eof())
      Original:
      the next available character c in the input sequence is delim as determined by Traits::eq_int_type(Traits::to_int_type(c), delim). The delimiter character is extracted and discarded (this test is disabled if delim is Traits::eof())
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    Parameter

    count -
    Anzahl der Zeichen zu extrahieren
    Original:
    number of characters to extract
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    delim -
    Trennzeichen, um die Extraktion bei stoppen. Es wird ebenfalls extrahiert .
    Original:
    delimiting character to stop the extraction at. It is also extracted.
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    Rückgabewert

    *this

    Beispiel

    #include <iostream>
#include <sstream>
#include <limits>
int main()
{
    std::istringstream input("1\n"
                             "some non-numeric input\n"
                             "2\n");
    for(;;) {
        int n;
        input >> n;

        if(input.eof() || input.bad())
            break;
        else if(input.fail()) {
            input.clear(); // unset failbit
            input.ignore(std::numeric_limits<std::streamsize>::max(), '\n'); // skip bad input
        } else
            std::cout << n << '\n';
    }
}

    Output: 

    1
2

    Siehe auch

    }
    		Extrahiere Zeichen
    (öffentliche Elementfunktion) [edit]
    Extrakte Zeichen, bis die gegebene Zeichen gefunden wird
    Original:
    extracts characters until the given character is found
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    (öffentliche Elementfunktion) [edit]