std::iscntrl
Материал из cppreference.com
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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. |
| Заголовочный файл <cctype>
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| int iscntrl( int ch ); |
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Проверяет, является ли данный символ классифицируется как символ управления по установленной локали C. Умолчанию, в локали C, управляющие символы являются символами с кодами
0x00-0x1F и 0x7F.Original:
Checks if the given character is classified as a control character by the currently installed C locale. In the default C locale, the control characters are the characters with the codes
0x00-0x1F and 0x7F.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.
Содержание |
[править] Параметры
| ch | - | характер
Original: character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[править] Возвращаемое значение
Номера для нулевого значения (true), если символ является управляющим символом,
0 (false) в противном случае.Original:
Non-zero value (true) if the character is a control character,
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.
[править] Пример
#include <iostream> #include <cctype> #include <clocale> int main() { char c = '\x94'; // the control code CCH in ISO-8859-1 std::cout << "iscntrl(\'\\x94\', default C locale) returned " << std::boolalpha << (bool)std::iscntrl(c) << '\n'; std::setlocale(LC_ALL, "en_GB.iso88591"); std::cout << "iscntrl(\'\\x94\', ISO-8859-1 locale) returned " << std::boolalpha << (bool)std::iscntrl(c) << '\n'; }
Вывод:
iscntrl('\x94', default C locale) returned false
iscntrl('\x94', ISO-8859-1 locale) returned true[править] См. также
| проверяет, является ли символ классифицируется как символ управления по локали Original: checks if a character is classified as a control character 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. (шаблон функции) | |
| проверяет, является ли широкий символ является управляющим символом Original: checks if a wide character is a control character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (функция) | |
| C документация для iscntrl
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| ASCII values (hex) |
characters |
iscntrl |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 - 8 | 0x00-0x08
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control codes (NUL, etc.)
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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
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0
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0
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0
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0
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| 9 | 0x09
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tab (\t)
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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
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0
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0
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0
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0
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| 10 - 13 | 0x0A-0x0D
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whitespaces (\n,\v,\f,\r)
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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
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0
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0
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0
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0
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| 14 - 31 | 0x0E-0x1F
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control codes | ≠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
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0
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0
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0
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| 32 | 0x20
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space | 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
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0
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0
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0
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| 33 - 47 | 0x21-0x2F
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!"#$%&'()*+,-./
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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
|
0
|
0
|
0
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| 48 - 57 | 0x30-0x39
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0123456789
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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
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≠0
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≠0
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| 58 - 64 | 0x3a-0x40
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:;<=>?@
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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
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0
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0
|
0
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0
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| 65 - 70 | 0x41-0x46
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ABCDEF
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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
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≠0
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0
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0
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≠0
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| 71 - 90 | 0x47-0x5A
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GHIJKLMNOPQRSTUVWXYZ
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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
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≠0
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0
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0
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0
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| 91 - 96 | 0x5B-0x60
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[\]^_`
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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
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0
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0
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0
|
0
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0
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| 97 -102 | 0x61-0x66
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abcdef
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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
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0
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≠0
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0
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≠0
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| 103-122 | 0x67-0x7A
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ghijklmnopqrstuvwxyz
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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
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0
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≠0
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0
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0
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| 123-126 | 0x7B-0x7E
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{|}~
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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
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0
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0
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0
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0
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| 127 | 0x7F
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backspace character (DEL)
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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
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0
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0
|
0
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0
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