std::iswupper(3) C++ Standard Libary std::iswupper(3) NAME std::iswupper - std::iswupper Synopsis Defined in header <cwctype> int iswupper( std::wint_t ch ); Checks if the given wide character is an uppercase letter, i.e. one of ABCDEFGHIJKLMNOPQRSTUVWXYZ or any uppercase letter specific to the cur- rent locale. If the value of ch is neither representable as a wchar_t nor equal to the value of the macro WEOF, the behavior is undefined. Parameters ch - wide character Return value Non-zero value if the wide character is an uppercase letter, zero other- wise. Notes ISO 30112 specifies which Unicode characters are include in POSIX upper category. Example // Run this code #include <clocale> #include <cwctype> #include <iostream> int main() { const wchar_t c = L'\u053d'; // Armenian capital letter xeh ('O1/2') std::cout << std::hex << std::showbase << std::boolalpha; std::cout << "in the default locale, iswupper(" << static_cast<std::wint_t>(c) << ") = " << static_cast<bool>(std::iswupper(c)) << '\n'; std::setlocale(LC_ALL, "en_US.utf8"); std::cout << "in Unicode locale, iswupper(" << static_cast<std::wint_t>(c) << ") = " << static_cast<bool>(std::iswupper(c)) << '\n'; } Output: in the default locale, iswupper(0x53d) = false in Unicode locale, iswupper(0x53d) = true See also isupper(std::locale) checks if a character is classified as uppercase by a locale (function template) isupper checks if a character is an uppercase character (function) C documentation for iswupper ASCII values characters iscntrl isprint isspace isblank isgraph ispunct isalnum isalpha isupper islower isdigit isxdigit decimal hexadecimal octal iswcntrl iswprint iswspace iswblank iswgraph iswpunct iswalnum iswalpha iswupper iswlower iswdigit iswxdigit 0a8 \x0a\x8 \0a\10 control codes a 0 0 0 0 0 0 0 0 0 0 0 0 (NUL, etc.) 9 \x9 \11 tab (\t) a 0 0 a 0 a 0 0 0 0 0 0 0 0 0 whitespaces 10a13 \xAa\xD \12a\15 (\n, \v, \f, a 0 0 a 0 0 0 0 0 0 0 0 0 0 \r) 14a31 \xEa\x1F \16a\37 control codes a 0 0 0 0 0 0 0 0 0 0 0 0 32 \x20 \40 space 0 a 0 a 0 a 0 0 0 0 0 0 0 0 0 33a47 \x21a\x2F \41a\57 !"#$%&'()*+,-./ 0 a 0 0 0 a 0 a 0 0 0 0 0 0 0 48a57 \x30a\x39 \60a\71 0123456789 0 a 0 0 0 a 0 0 a 0 0 0 0 a 0 a 0 58a64 \x3Aa\x40 \72a\100 :;<=>?@ 0 a 0 0 0 a 0 a 0 0 0 0 0 0 0 65a70 \x41a\x46 \101a\106 ABCDEF 0 a 0 0 0 a 0 0 a 0 a 0 a 0 0 0 a 0 71a90 \x47a\x5A \107a\132 GHIJKLMNOP 0 a 0 0 0 a 0 0 a 0 a 0 a 0 0 0 0 QRSTUVWXYZ 91a96 \x5Ba\x60 \133a\140 [\]^_` 0 a 0 0 0 a 0 a 0 0 0 0 0 0 0 97a102 \x61a\x66 \141a\146 abcdef 0 a 0 0 0 a 0 0 a 0 a 0 0 a 0 0 a 0 103a122 \x67a\x7A \147a\172 ghijklmnop 0 a 0 0 0 a 0 0 a 0 a 0 0 a 0 0 0 qrstuvwxyz 123a126 \x7Ba\x7E \172a\176 {|}~ 0 a 0 0 0 a 0 a 0 0 0 0 0 0 0 127 \x7F \177 backspace a 0 0 0 0 0 0 0 0 0 0 0 0 character (DEL) http://cppreference.com 2024.06.10 std::iswupper(3)
NAME | Synopsis | Parameters | Return value | Notes | Example | Output: | See also
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