std::left, std::right, std::internal
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<metanoindex/>
<tbody> </tbody>| Déclaré dans l'en-tête <ios>
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std::ios_base& left( std::ios_base& str ); |
(1) | |
std::ios_base& right( std::ios_base& str ); |
(2) | |
std::ios_base& internal( std::ios_base& str ); |
(3) | |
Modifie le positionnement par défaut des caractères de remplissage.
left et right s'appliquer à n'importe quelle sortie, internal s'applique en entier, sortie en virgule flottante et monétaire. N'a aucun effet sur entrée .Original:
Modifies the default positioning of the fill characters.
left and right apply to any output, internal applies to integer, floating-point, and monetary output. Has no effect on input.The text has been machine-translated via Google Translate.
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1)
définit le
adjustfield de la str flux de left comme si en appelant str.setf(std::ios_base::left, std::ios_base::adjustfield)Original:
sets the
adjustfield of the stream str to left as if by calling str.setf(std::ios_base::left, std::ios_base::adjustfield)The text has been machine-translated via Google Translate.
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2)
définit le
adjustfield de la str flux de right comme si en appelant str.setf(std::ios_base::right, std::ios_base::adjustfield)Original:
sets the
adjustfield of the stream str to right as if by calling str.setf(std::ios_base::right, std::ios_base::adjustfield)The text has been machine-translated via Google Translate.
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3)
définit le
adjustfield de la str flux de internal comme si en appelant str.setf(std::ios_base::internal, std::ios_base::adjustfield)Original:
sets the
adjustfield of the stream str to internal as if by calling str.setf(std::ios_base::internal, std::ios_base::adjustfield)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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Il s'agit d'un manipulateur d'E / S, il peut être appelé avec une expression telle que pour tout
out << std::left out de std::basic_ostream type ou d'une expression telle que pour tout in >> std::left in de std::basic_istream type .Original:
This is an I/O manipulator, it may be called with an expression such as
out << std::left for any out of type std::basic_ostream or with an expression such as in >> std::left 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 <iomanip>
#include <locale>
int main()
{
std::cout.imbue(std::locale("en_US.utf8"));
std::cout << "Left fill:\n" << std::left << std::setfill('*')
<< std::setw(12) << -1.23 << '\n'
<< std::setw(12) << std::hex << std::showbase << 42 << '\n'
<< std::setw(12) << std::put_money(123, true) << "\n\n";
std::cout << "Internal fill:\n" << std::internal
<< std::setw(12) << -1.23 << '\n'
<< std::setw(12) << 42 << '\n'
<< std::setw(12) << std::put_money(123, true) << "\n\n";
std::cout << "Right fill:\n" << std::right
<< std::setw(12) << -1.23 << '\n'
<< std::setw(12) << 42 << '\n'
<< std::setw(12) << std::put_money(123, true) << '\n';
}
Résultat :
Left fill:
-1.23*******
0x2a********
USD *1.23***
Internal fill:
-*******1.23
0x********2a
USD ****1.23
Right fill:
*******-1.23
********0x2a
***USD *1.23
Voir aussi
modifie la largeur de l'entrée suivante / champ de sortie Original: changes the width of the next input/output field The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction) | |
modifie le caractère de remplissage Original: changes the fill character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction générique) | |