iswupper
来自cppreference.com
                    
                                        
                    
                    
                                                            
                    |   在标头  <wctype.h> 定义
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|   int iswupper( wint_t ch );  | 
(C95 起) | |
检查给定宽字符是否大写字母,即 ABCDEFGHIJKLMNOPQRSTUVWXYZ 或任何当前本地环境限定的大写字母之一。
参数
| ch | - | 宽字符 | 
返回值
若宽字符为大写字母则为非零值,否则为零。
注意
ISO 30112 指定哪些 Unicode 字符包含于 POSIX 大写类别。
示例
运行此代码
#include <locale.h> #include <stdio.h> #include <wchar.h> #include <wctype.h> int main(void) { wchar_t c = L'\u053d'; // 亚美尼亚文大写字母 xeh ('Խ') printf("In the default locale, iswupper(%#x) = %d\n", c, !!iswupper(c)); setlocale(LC_ALL, "en_US.utf8"); printf("In Unicode locale, iswupper(%#x) = %d\n", c, !!iswupper(c)); }
输出:
In the default locale, iswupper(0x53d) = 0 In Unicode locale, iswupper(0x53d) = 1
引用
- C23 标准(ISO/IEC 9899:2024):
 
- 7.30.2.1.11 The iswupper function (第 TBD 页)
 
- C17 标准(ISO/IEC 9899:2018):
 
- 7.30.2.1.11 The iswupper function (第 TBD 页)
 
- C11 标准(ISO/IEC 9899:2011):
 
- 7.30.2.1.11 The iswupper function (第 451 页)
 
- C99 标准(ISO/IEC 9899:1999):
 
- 7.25.2.1.11 The iswupper function (第 397 页)
 
参阅
|    检查一个字符是否是大写字母  (函数)  | 
| ASCII 值 | 字符 | 
 isupper  | 
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 十进制 | 十六进制 | 八进制 | |||||||||||||
| 0–8 |  \x0–\x8
 | 
 \0–\10
 | 
 控制码 (NUL 等)
 | 
≠0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
| 9 |  \x9
 | 
 \11
 | 
 制表符 (\t)
 | 
≠0
 | 
 0
 | 
≠0
 | 
≠0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
| 10–13 |  \xA–\xD
 | 
 \12–\15
 | 
 空白符 (\n, \v, \f, \r)
 | 
≠0
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
| 14–31 |  \xE–\x1F
 | 
 \16–\37
 | 
控制码 | ≠0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
| 32 |  \x20
 | 
 \40
 | 
空格 |  0
 | 
≠0
 | 
≠0
 | 
≠0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
| 33–47 |  \x21–\x2F
 | 
 \41–\57
 | 
 !"#$%&'()*+,-./
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
≠0
 | 
≠0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
| 48–57 |  \x30–\x39
 | 
 \60–\71
 | 
 0123456789
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
≠0
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
 0
 | 
≠0
 | 
≠0
 | 
| 58–64 |  \x3A–\x40
 | 
 \72–\100
 | 
 :;<=>?@
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
≠0
 | 
≠0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
| 65–70 |  \x41–\x46
 | 
 \101–\106
 | 
 ABCDEF
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
≠0
 | 
 0
 | 
≠0
 | 
≠0
 | 
≠0
 | 
 0
 | 
 0
 | 
≠0
 | 
| 71–90 |  \x47–\x5A
 | 
 \107–\132
 | 
 GHIJKLMNOPQRSTUVWXYZ
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
≠0
 | 
 0
 | 
≠0
 | 
≠0
 | 
≠0
 | 
 0
 | 
 0
 | 
 0
 | 
| 91–96 |  \x5B–\x60
 | 
 \133–\140
 | 
 [\]^_`
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
≠0
 | 
≠0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
| 97–102 |  \x61–\x66
 | 
 \141–\146
 | 
 abcdef
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
≠0
 | 
 0
 | 
≠0
 | 
≠0
 | 
 0
 | 
≠0
 | 
 0
 | 
≠0
 | 
| 103–122 |  \x67–\x7A
 | 
 \147–\172
 | 
 ghijklmnopqrstuvwxyz
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
≠0
 | 
 0
 | 
≠0
 | 
≠0
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
| 123–126 |  \x7B–\x7E
 | 
 \172–\176
 | 
 {|}~
 | 
 0
 | 
≠0
 | 
 0
 | 
 0
 | 
≠0
 | 
≠0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
| 127 |  \x7F
 | 
 \177
 | 
 退格符 (DEL)
 | 
≠0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 | 
 0
 |