std::iswupper
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在头文件 <cwctype> 中定义
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int iswupper( std::wint_t ch ); |
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。检查是否给定的宽字符是一个大写字母,即
ABCDEFGHIJKLMNOPQRSTUVWXYZ
或任何当前的区域设置特定的大写字母.原文:
Checks if the given wide character is an uppercase letter, i.e. one of
ABCDEFGHIJKLMNOPQRSTUVWXYZ
or any uppercase letter specific to the current locale.[编辑] 。参数。
ch | - | 。宽字符。
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===。 返回值。===
。非0值(true)的宽字符,如果是大写字母,
0
(false),否则.原文:
Non-zero value (true) if the wide character is an uppercase letter,
0
(false) otherwise.[编辑] 。为例。
#include <iostream> #include <cwctype> #include <clocale> int main() { wchar_t c = L'\u053d'; // Armenian capital letter xeh ('Խ') std::cout << std::hex << std::showbase << std::boolalpha; std::cout << "in the default locale, iswupper(" << (std::wint_t)c << ") = " << (bool)std::iswupper(c) << '\n'; std::setlocale(LC_ALL, "en_US.utf8"); std::cout << "in Unicode locale, iswupper(" << (std::wint_t)c << ") = " << (bool)std::iswupper(c) << '\n'; }
输出:
in the default locale, iswupper(0x53d) = false in Unicode locale, iswupper(0x53d) = true
[编辑] 。另请参阅。
检查,如果一个字符被归类为大写字母的语言环境 原文: checks if a character is classified as uppercase by a locale (函数模板) | |
检查,如果字符是一个大写字符 原文: checks if a character is an uppercase character (函数) | |
C documentation for iswupper
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ASCII values (hex) |
characters |
isupper |
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---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0 - 8 | 0x00-0x08
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control codes (NUL , etc.)
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
9 | 0x09
|
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
|
≠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
|
≠0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
33 - 47 | 0x21-0x2F
|
!"#$%&'()*+,-./
|
0
|
≠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
|
≠0
|
0
|
0
|
≠0
|
71 - 90 | 0x47-0x5A
|
GHIJKLMNOPQRSTUVWXYZ
|
0
|
≠0
|
0
|
0
|
≠0
|
0
|
≠0
|
≠0
|
≠0
|
0
|
0
|
0
|
91 - 96 | 0x5B-0x60
|
[\]^_`
|
0
|
≠0
|
0
|
0
|
≠0
|
≠0
|
0
|
0
|
0
|
0
|
0
|
0
|
97 -102 | 0x61-0x66
|
abcdef
|
0
|
≠0
|
0
|
0
|
≠0
|
0
|
≠0
|
≠0
|
0
|
≠0
|
0
|
≠0
|
103-122 | 0x67-0x7A
|
ghijklmnopqrstuvwxyz
|
0
|
≠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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