std::setw
De 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. |
| Defined in header <iomanip>
|
||
| /*unspecified*/ setw( int n ); |
||
Cuando se utiliza en una expresión out << setw(n) o in >> setw(n), establece el parámetro
width de la corriente out o in exactamente n. Este valor no es "pegajosa": la entrada siguiente o la operación de salida que se ve afectado por el valor del campo width de la corriente, se restablece a cero (es decir, "no especificado") .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.
Contenido |
[editar] Parámetros
| n | - | nuevo valor de ancho
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. |
[editar] Valor de retorno
Devuelve un objeto de tipo no especificado tal que si
str es el nombre de un flujo de salida de tipo std::basic_ostream<CharT, Traits> o std::basic_istream<CharT, Traits>, entonces la expresión str << setw(n) o str >> setw(n) comporta como si el código se ha ejecutado: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);
[editar] Ejemplo
#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"
[editar] Ver también
| manages field width (miembro público of std::ios_base función)
| |
| cambia el carácter de relleno 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. (función de plantilla) | |
