std::skipws, std::noskipws
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<metanoindex/>
<tbody> </tbody>| Déclaré dans l'en-tête <ios>
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std::ios_base& skipws( std::ios_base& str ); |
(1) | |
std::ios_base& noskipws( std::ios_base& str ); |
(2) | |
Active ou désactive le saut de diriger les espaces en utilisant les fonctions d'entrée formatées (activé par défaut). N'a pas d'effet sur la production .
Original:
Enables or disables skipping of leading whitespace by the formatted input functions (enabled by default). Has no effect on output.
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1)
permet le drapeau
skipws dans le flux str comme si en appelant str.setf(std::ios_base::skipws)Original:
enables the
skipws flag in the stream str as if by calling str.setf(std::ios_base::skipws)The text has been machine-translated via Google Translate.
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2)
désactive le drapeau
skipws dans le flux str comme si en appelant str.unsetf(std::ios_base::skipws)Original:
disables the
skipws flag in the stream str as if by calling str.unsetf(std::ios_base::skipws)The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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L'espace blanc à sauter est effectuée par le constructeur de std::basic_istream::sentry, qui se lit et annule les caractères classés comme espaces en utilisant la facette de std::ctype locale imprégnée du cours d'eau .
Original:
The whitespace skipping is performed by the constructor of std::basic_istream::sentry, which reads and discards the characters classified as whitespace by the std::ctype facet of the stream's imbued locale.
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Il s'agit d'un manipulateur d'E / S, il peut être appelé avec une expression telle que pour tout
out << std::noskipws out de std::basic_ostream type ou d'une expression telle que pour tout in >> std::noskipws in de std::basic_istream type .Original:
This is an I/O manipulator, it may be called with an expression such as
out << std::noskipws for any out of type std::basic_ostream or with an expression such as in >> std::noskipws for any in of type std::basic_istream.The text has been machine-translated via Google Translate.
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Paramètres
| str | - | référence aux flux d'entrée / sortie
Original: reference to I/O stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Retourne la valeur
str (référence au flux après la manipulation)Original:
str (reference to the stream after manipulation)The text has been machine-translated via Google Translate.
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Exemple
#include <iostream>
#include <sstream>
int main()
{
char c1, c2, c3;
std::istringstream("a b c") >> c1 >> c2 >> c3;
std::cout << "Default behavior: c1 = " << c1 << " c2 = " << c2 << " c3 = " << c3 << '\n';
std::istringstream("a b c") >> std::noskipws >> c1 >> c2 >> c3;
std::cout << "noskipws behavior: c1 = " << c1 << " c2 = " << c2 << " c3 = " << c3 << '\n';
}
Résultat :
Default behavior: c1 = a c2 = b c3 = c
noskipws behavior: c1 = a c2 = c3 = b
Voir aussi
efface les drapeaux ios_base spécifiées Original: clears the specified ios_base flags The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction) | |
fixe les drapeaux ios_base spécifiées Original: sets the specified ios_base flags The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction) | |