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std::basic_istream::ignore

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C++
 
D'entrée / sortie de bibliothèque
I / O manipulateurs
C-style I / O
Tampons
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf (obsolète)
Cours d'eau
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Streams
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Abstractions
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Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
Fichier E / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
Chaîne I / O
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String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Tableau I / O
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Array I/O
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istrstream (obsolète)
ostrstream (obsolète)
strstream (obsolète)
Types
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Types
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streamoff
streamsize
fpos
Interface catégorie d'erreur
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Error category interface
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iostream_category (C++11)
io_errc (C++11)
 
std::basic_istream
Les objets globaux
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Global objects
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cin
wcin
Les fonctions membres
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Member functions
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basic_istream::basic_istream
basic_istream::~basic_istream
basic_istream::operator= (C++11)
Entrée formaté
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Formatted input
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basic_istream::operator>>
Entrée non formaté
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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
Positionnement
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Positioning
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basic_istream::tellg
basic_istream::seekg
Divers
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Miscellaneous
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basic_istream::sync
basic_istream::swap (C++11)
Classes de membres
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Member classes
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basic_istream::sentry
Tiers fonctions
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Non-member functions
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operator>>(std::basic_istream)
 
basic_istream& ignore( std::streamsize count = 1, int_type delim = Traits::eof() );
Extraits et les personnages les rejets à partir du flux d'entrée jusqu'à et y compris delim .
Original:
Extracts and discards characters from the input stream until and including delim.
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Se comporte comme UnformattedInputFunction. Après la construction et la vérification de l'objet sentinelle, extrait les caractères à partir du flux et les supprime jusqu'à l'une des conditions suivantes est remplie:
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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  • Fin de fichier se produit dans les conditions de la séquence d'entrée (dans ce cas, la fonction appelle setstate(eofbit)
    Original:
    end of file conditions occurs in the input sequence (in which case the function calls setstate(eofbit)
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  • la c caractère suivant disponible dans la séquence d'entrée est déterminé par delim Traits::eq_int_type(Traits::to_int_type(c), delim). Le caractère délimiteur est extrait et mis au rebut (ce test est désactivée si delim est 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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Sommaire

[modifier] Paramètres

count -
nombre de caractères à extraire
Original:
number of characters to extract
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delim -
délimitant caractère d'arrêter l'extraction à. Il est également extraite .
Original:
delimiting character to stop the extraction at. It is also extracted.
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[modifier] Retourne la valeur

*this

[modifier] Exemple

#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';
    }
}

Résultat : 

1
2

[modifier] Voir aussi
extraits caractères
Original:
extracts characters
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(fonction membre publique) [edit]
caractères extraits jusqu'à ce que le caractère donné se trouve
Original:
extracts characters until the given character is found
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(fonction membre publique) [edit]
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