std::islower
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| Elemento definito nell'header <cctype>
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| int islower( int ch ); |
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Controlla se il carattere determinato viene classificato come un carattere minuscolo in base alla localizzazione corrente C. Nel predefinita locale "C",
islower restituisce true solo per le lettere minuscole (abcdefghijklmnopqrstuvwxyz).Original:
Checks if the given character is classified as a lowercase character according to the current C locale. In the default "C" locale,
islower returns true only for the lowercase letters (abcdefghijklmnopqrstuvwxyz).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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Se
islower restituisce true, è garantito che iscntrl, isdigit, ispunct e isspace false ritorno per lo stesso carattere nella stessa zona C.Original:
If
islower returns true, it is guaranteed that iscntrl, isdigit, ispunct, and isspace return false for the same character in the same C locale.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.
Indice |
[modifica] Parametri
| ch | - | carattere
Original: character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[modifica] Valore di ritorno
Valore diverso da zero (true) se il carattere è una lettera minuscola,
0 (false) altrimenti.Original:
Non-zero value (true) if the character is a lowercase letter,
0 (false) otherwise.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.
[modifica] Esempio
#include <iostream> #include <cctype> #include <clocale> int main() { char c = '\xe5'; // letter å in ISO-8859-1 std::cout << "islower(\'\\xe5\', default C locale) returned " << std::boolalpha << (bool)std::islower(c) << '\n'; std::setlocale(LC_ALL, "en_GB.iso88591"); std::cout << "islower(\'\\xe5\', ISO-8859-1 locale) returned " << std::boolalpha << (bool)std::islower(c) << '\n'; }
Output:
islower('\xe5', default C locale) returned false
islower('\xe5', ISO-8859-1 locale) returned true[modifica] Vedi anche
| Verifica se un carattere è classificato come minuscola da un locale Original: checks if a character is classified as lowercase by a locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione di modello) | |
| Verifica se un carattere esteso è minuscolo Original: checks if a wide character is lowercase The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione) | |
| C documentation for islower
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| ASCII values (hex) |
characters |
islower |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 - 8 | 0x00-0x08
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control codes (NUL, etc.)
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≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
| 9 | 0x09
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tab (\t)
|
≠0
|
0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
| 10 - 13 | 0x0A-0x0D
|
whitespaces (\n,\v,\f,\r)
|
≠0
|
0
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≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
| 14 - 31 | 0x0E-0x1F
|
control codes | ≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
| 32 | 0x20
|
space | 0
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≠0
|
≠0
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≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
| 33 - 47 | 0x21-0x2F
|
!"#$%&'()*+,-./
|
0
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≠0
|
0
|
0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
| 48 - 57 | 0x30-0x39
|
0123456789
|
0
|
≠0
|
0
|
0
|
≠0
|
0
|
≠0
|
0
|
0
|
0
|
≠0
|
≠0
|
| 58 - 64 | 0x3a-0x40
|
:;<=>?@
|
0
|
≠0
|
0
|
0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
| 65 - 70 | 0x41-0x46
|
ABCDEF
|
0
|
≠0
|
0
|
0
|
≠0
|
0
|
≠0
|
≠0
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≠0
|
0
|
0
|
≠0
|
| 71 - 90 | 0x47-0x5A
|
GHIJKLMNOPQRSTUVWXYZ
|
0
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≠0
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0
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0
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≠0
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0
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≠0
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≠0
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≠0
|
0
|
0
|
0
|
| 91 - 96 | 0x5B-0x60
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[\]^_`
|
0
|
≠0
|
0
|
0
|
≠0
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≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
| 97 -102 | 0x61-0x66
|
abcdef
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0
|
≠0
|
0
|
0
|
≠0
|
0
|
≠0
|
≠0
|
0
|
≠0
|
0
|
≠0
|
| 103-122 | 0x67-0x7A
|
ghijklmnopqrstuvwxyz
|
0
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≠0
|
0
|
0
|
≠0
|
0
|
≠0
|
≠0
|
0
|
≠0
|
0
|
0
|
| 123-126 | 0x7B-0x7E
|
{|}~
|
0
|
≠0
|
0
|
0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
| 127 | 0x7F
|
backspace character (DEL)
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
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