std::iswprint(3)

NAME
std::iswprint - std::iswprint

Synopsis
   Defined in header <cwctype>
   int iswprint( std::wint_t ch );
   Checks if the given wide character can be printed, i.e. it is either a number
   (0123456789), an uppercase letter (ABCDEFGHIJKLMNOPQRSTUVWXYZ), a lowercase letter
   (abcdefghijklmnopqrstuvwxyz), a punctuation
   character(!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~), space or any printable character
   specific to the current C 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 can be printed, zero otherwise.

Notes
   ISO 30112 specifies which Unicode characters are include in POSIX print category.

Example
// Run this code
 #include <iostream>
 #include <cwctype>
 #include <clocale>
 int main()
 {
     wchar_t c = L'\u2002'; // en-space
     std::setlocale(LC_ALL, "en_US.utf8");
     std::cout << std::boolalpha << std::hex << std::showbase
               << "in Unicode locale,\n"
               << "iswprint('" << c << "') = "
               << (bool)std::iswprint(c) << '\n';
     c = L'\u0082'; // break permitted
     std::cout << "iswprint('" << c << "') = "
               << (bool)std::iswprint(c) << '\n';
 }

Output:
 in Unicode locale,
 iswprint('0x2002') = true
 iswprint('0x82') = false

See also
   isprint(std::locale) checks if a character is classified as printable by a locale
                        (function template)
   isprint checks if a character is a printing character
                        (function)
          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 0â€“8 \x0â€“\x8 \0â€“\10 control codes â‰ 0 0 0 0 0 0 0 0 0 0 0 0
                        (NUL, etc.) 9 \x9 \11 tab (\t) â‰ 0 0 â‰ 0 â‰ 0 0 0 0 0 0 0 0 0
                        whitespaces 10â€“13 \xAâ€“\xD \12â€“\15 (\n, \v, \f, â‰ 0 0 â‰ 0 0 0 0 0 0 0 0 0 0
                        \r) 14â€“31 \xEâ€“\x1F \16â€“\37 control codes â‰ 0 0 0 0 0 0 0 0 0 0 0 0 32 \x20 \40 space 0 â‰ 0 â‰ 0 â‰ 0 0 0 0 0 0 0 0 0 33â€“47 \x21â€“\x2F \41â€“\57 !"#$%&'()*+,-./ 0 â‰ 0 0 0 â‰ 0 â‰ 0 0 0 0 0 0 0 48â€“57 \x30â€“\x39 \60â€“\71 0123456789 0 â‰ 0 0 0 â‰ 0 0 â‰ 0 0 0 0 â‰ 0 â‰ 0 58â€“64 \x3Aâ€“\x40 \72â€“\100 :;<=>?@ 0 â‰ 0 0 0 â‰ 0 â‰ 0 0 0 0 0 0 0 65â€“70 \x41â€“\x46 \101â€“\106 ABCDEF 0 â‰ 0 0 0 â‰ 0 0 â‰ 0 â‰ 0 â‰ 0 0 0 â‰ 0 71â€“90 \x47â€“\x5A \107â€“\132 GHIJKLMNOP 0 â‰ 0 0 0 â‰ 0 0 â‰ 0 â‰ 0 â‰ 0 0 0 0
                        QRSTUVWXYZ 91â€“96 \x5Bâ€“\x60 \133â€“\140 [\]^_` 0 â‰ 0 0 0 â‰ 0 â‰ 0 0 0 0 0 0 0 97â€“102 \x61â€“\x66 \141â€“\146 abcdef 0 â‰ 0 0 0 â‰ 0 0 â‰ 0 â‰ 0 0 â‰ 0 0 â‰ 0 103â€“122 \x67â€“\x7A \147â€“\172 ghijklmnop 0 â‰ 0 0 0 â‰ 0 0 â‰ 0 â‰ 0 0 â‰ 0 0 0
                        qrstuvwxyz 123â€“126 \x7Bâ€“\x7E \172â€“\176 {|}~ 0 â‰ 0 0 0 â‰ 0 â‰ 0 0 0 0 0 0 0 127 \x7F \177 backspace â‰ 0 0 0 0 0 0 0 0 0 0 0 0
                        character (DEL)