std::setw
Aus cppreference.com
 |
This page has been machine-translated from the English version of the wiki using Google Translate.
The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here. |
<metanoindex/>
<tbody> </tbody>| definiert in Header <iomanip>
|
||
/*unspecified*/ setw( int n ); |
||
Wenn in einem Ausdruck verwendet
out << setw(n) oder in >> setw(n), setzt die width Parameter der Strom out oder in genau n. Dieser Wert ist nicht "klebrig": Der nächste Eingang oder Ausgang Operation, die durch den Wert des Streams width Bereich betroffen ist, wird sie auf Null (im Sinne von "unspezifiziert") .Original:
When used in an expression
out << setw(n) or in >> setw(n), sets the width parameter of the stream out or in to exactly n. This value is not "sticky": the next input or output operation that is affected by the value of the stream's width field, resets it to zero (meaning "unspecified").The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Parameter
| n | - | neuen Wert für die Breite
Original: new value for width The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Rückgabewert
Gibt ein Objekt vom angegebenen Typ, so dass, wenn
str der Name eines Output-Stream vom Typ ist std::basic_ostream<CharT, Traits> oder std::basic_istream<CharT, Traits>, dann ist der Ausdruck str << setw(n) oder str >> setw(n) verhält, als ob der folgende Code ausgeführt wurde:Original:
Returns an object of unspecified type such that if
str is the name of an output stream of type std::basic_ostream<CharT, Traits> or std::basic_istream<CharT, Traits>, then the expression str << setw(n) or str >> setw(n) behaves as if the following code was executed:The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
str.width(n);
Beispiel
#include <sstream>
#include <iostream>
#include <iomanip>
int main()
{
std::cout << "no setw: " << 42 << '\n'
<< "setw(6): " << std::setw(6) << 42 << '\n';
std::istringstream is("hello, world");
char arr[10];
is >> std::setw(6) >> arr;
std::cout << "Input from \"" << is.str() << "\" with setw(6) gave \"" << arr << "\"\n";
}
Output:
no setw: 42
setw(6): 42
Input from "hello, world" with setw(6) gave "hello"
Siehe auch
| manages field width (öffentliche Elementfunktion of std::ios_base)
| |
ändert sich die Füllzeichen 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. (Funktions-Template) | |