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std::basic_ostream::put

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< cpp‎ | io‎ | basic ostream

 
 
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
Original:
Streams
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Abstractions
Original:
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
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Tableau I / O
Original:
Array I/O
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istrstream (obsolète)
ostrstream (obsolète)
strstream (obsolète)
Types
Original:
Types
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streamoff
streamsize
fpos
Interface catégorie d'erreur
Original:
Error category interface
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iostream_category (C++11)
io_errc (C++11)
 
std::basic_ostream
Les objets globaux
Original:
Global objects
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Les fonctions membres
Original:
Member functions
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basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator= (C++11)
Entrée formaté
Original:
Formatted input
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basic_ostream::operator<<
Entrée non formaté
Original:
Unformatted input
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basic_ostream::put
basic_ostream::write
Positionnement
Original:
Positioning
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basic_ostream::tellp
basic_ostream::seekp
Divers
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Miscellaneous
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basic_ostream::flush
basic_ostream::swap (C++11)
Classes de membres
Original:
Member classes
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basic_ostream::sentry
Tiers fonctions
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Non-member functions
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operator<<(std::basic_ostream)
 
basic_ostream& put( char_type ch );
Écrit ch caractère dans le flux de sortie .
Original:
Writes character ch to the output stream.
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Cette fonction est une fonction de sortie non formatée: il commencer l'exécution par la construction d'un objet de sentry type, qui vide les tampons de sortie tie()'d si nécessaire et vérifie les erreurs de flux. Après la construction, si les rendements objet sentinelle false, la fonction retourne sans tenter aucune sortie. Si une exception est levée lors de la sortie, puis ios :: BadBit est activé (l'exception est supprimée, sauf exceptions()&badbit) != 0, auquel cas il est relancée)
Original:
This function is an unformatted output function: it 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, the function returns without attempting any output. 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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Sommaire

[modifier] Paramètres

ch -
caractère à écrire
Original:
character to write
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[modifier] Retourne la valeur

*this

[modifier] Notes

formaté
Original:
This function is not overloaded for the types signed char or unsigned char, unlike the formatted
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Contrairement aux fonctions de sortie formatée, cette fonction ne définit pas le failbit si la sortie ne .
Original:
Unlike formatted output functions, this function does not set the failbit if the output fails.
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[modifier] Exemple

#include <fstream>
#include <iostream>
int main()
{
    std::cout.put('a'); // normal usage
    std::cout.put('\n');
 
    std::ofstream s("/does/not/exist/");
    s.clear(); // pretend the stream is good
    std::cout << "Unformatted output: ";
    s.put('c'); // this will set badbit, but not failbit
    std::cout << " fail=" << bool(s.rdstate() & s.failbit);
    std::cout << " bad=" << s.bad() << '\n';
    s.clear();
    std::cout << "Formatted output:   ";
    s << 'c'; // this will set badbit and failbit
    std::cout << " fail=" << bool(s.rdstate() & s.failbit);
    std::cout << " bad=" << s.bad() << '\n';
}

Résultat :

a
Unformatted output:  fail=0 bad=1
Formatted output:    fail=1 bad=1

[modifier] Voir aussi

insère des données de caractères
Original:
inserts character data
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(fonction) [edit]
blocs inserts de caractères
Original:
inserts blocks of characters
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(fonction membre publique) [edit]