integer literal - cppreference.com

Da cppreference.com.

Questa pagina è stata tradotta in modo automatico dalla versione in ineglese della wiki usando Google Translate.

La traduzione potrebbe contenere errori e termini strani. Muovi il puntatore sopra al testo per vedere la versione originale. Puoi aiutarci a correggere gli gli errori. Per ulteriori istruzioni clicca qui.

Click here for the English version of this page

Sintassi


[0-9]+ type_suffix	(1)

0 [0-7]+ type_suffix	(2)

0 x [0-9a-b]+ type_suffix	(3)

Spiegazione

# Notazione decimale

Original:

# Decimal notation

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

# Notazione ottale

Original:

# Octal notation

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

# Notazione esadecimale

Original:

# Hexadecimal notation

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Tipi di suffisso

, (Nessun suffisso)

Original:

;(no suffix)

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

int
u: unsigned int
l: long
ul: unsigned long
ll (dal C++11): long long
ull (dal C++11): unsigned long long

Note

Lettere in costanti intere sono maiuscole e minuscole.
Original:
Letters in integer constants are case-insensitive.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Esempio

std::cout << 123    << '\n'
          << 0123   << '\n'
          << 0x123  << '\n'
          << 12345678901234567890UL << '\n'
          << -1u    << '\n'
          << -1ull  << '\n';

Output:

123
83
291
12345678901234567890
4294967295
18446744073709551615

(Uscita da un processore x86_64)

Original:

(output from an x86_64 processor)

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.