std::dec, std::hex, std::oct
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<tbody> </tbody>| Elemento definito nell'header <ios>
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std::ios_base& dec( std::ios_base& str ); |
(1) | |
std::ios_base& hex( std::ios_base& str ); |
(2) | |
std::ios_base& oct( std::ios_base& str ); |
(3) | |
Modifica la base numerica di default per intero di I / O
Original:
Modifies the default numeric base for integer I/O
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.
1)
imposta il
basefield del str flusso di dec come se chiamando str.setf(std::ios_base::dec, std::ios_base::basefield)Original:
sets the
basefield of the stream str to dec as if by calling str.setf(std::ios_base::dec, std::ios_base::basefield)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.
2)
imposta il
basefield del str flusso di hex come se chiamando str.setf(std::ios_base::hex, std::ios_base::basefield)Original:
sets the
basefield of the stream str to hex as if by calling str.setf(std::ios_base::hex, std::ios_base::basefield)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.
3)
imposta il
basefield del str flusso di oct come se chiamando str.setf(std::ios_base::oct, std::ios_base::basefield)Original:
sets the
basefield of the stream str to oct as if by calling str.setf(std::ios_base::oct, std::ios_base::basefield)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.
Si tratta di un manipolatore di I / O, può essere chiamato con espressioni quali
out << std::hex per qualsiasi out di std::basic_ostream tipo o con un'espressione come in >> std::hex per qualsiasi in di std::basic_istream tipo.Original:
This is an I/O manipulator, it may be called with an expression such as
out << std::hex for any out of type std::basic_ostream or with an expression such as in >> std::hex for any in of type std::basic_istream.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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Parametri
| str | - | riferimento al flusso di I / O
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. |
Valore di ritorno
str (riferimento al flusso dopo la manipolazione)Original:
str (reference to the stream after manipulation)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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Esempio
#include <iostream>
#include <sstream>
int main()
{
std::cout << "The number 42 in octal: " << std::oct << 42 << '\n'
<< "The number 42 in decimal: " << std::dec << 42 << '\n'
<< "The number 42 in hex: " << std::hex << 42 << '\n';
int n;
std::istringstream("2A") >> std::hex >> n;
std::cout << std::dec << "Parsing \"2A\" as hex gives " << n << '\n';
}
Output:
The number 42 in octal: 52
The number 42 in decimal: 42
The number 42 in hex: 2a
Parsing "2A" as hex gives 42
Vedi anche
modifica la base utilizzata per intero di I / O Original: changes the base used for integer I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione) | |
controlla se il prefisso è usato per indicare base numerica Original: controls whether prefix is used to indicate numeric base The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione) |