Movatterモバイル変換

[0]ホーム
URL:

cppreference.com
Namespaces
Variants
    Actions

      std::iswprint

      From cppreference.com
      <cpp‎ |string‎ |wide
       
       
       
       
      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 ofch is neither representable as awchar_t nor equal to the value of the macroWEOF, the behavior is undefined.

      Contents

      [edit]Parameters

      ch - wide character

      [edit]Return value

      Non-zero value if the wide character can be printed, zero otherwise.

      [edit]Notes

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

      [edit]Example

      Run this code
      #include <clocale>#include <cwctype>#include <iostream> void demo_iswprint(std::string_view rem,conststd::wint_t c){std::cout<<std::boolalpha<<std::hex<<std::showbase<< rem<<"iswprint('"<< c<<"') = "<<!!std::iswprint(c)<<'\n';} int main(){constwchar_t c1= L'\u2002';// en-spaceconstwchar_t c2= L'\u0082';// break permitted     demo_iswprint("In default locale:\n", c1); std::setlocale(LC_ALL,"en_US.utf8");    demo_iswprint("In Unicode locale:\n", c1);    demo_iswprint("", c2);}

      Possible output:

      In default locale:iswprint('0x2002') = falseIn Unicode locale:iswprint('0x2002') = trueiswprint('0x82') = false

      [edit]See also

      checks if a character is classified as printable by a locale
      (function template)[edit]
      checks if a character is a printing character
      (function)[edit]
      C documentation foriswprint
      ASCII valuescharacters

      iscntrl
      iswcntrl

      isprint
      iswprint

      isspace
      iswspace

      isblank
      iswblank

      isgraph
      iswgraph

      ispunct
      iswpunct

      isalnum
      iswalnum

      isalpha
      iswalpha

      isupper
      iswupper

      islower
      iswlower

      isdigit
      iswdigit

      isxdigit
      iswxdigit

      decimalhexadecimaloctal
      0–8\x0–\x8\0–\10control codes (NUL, etc.)≠000000000000
      9\x9\11tab (\t)≠00≠0≠000000000
      10–13\xA–\xD\12–\15whitespaces (\n,\v,\f,\r)≠00≠0000000000
      14–31\xE–\x1F\16–\37control codes≠000000000000
      32\x20\40space0≠0≠0≠000000000
      33–47\x21–\x2F\41–\57!"#$%&'()*+,-./0≠000≠0≠0000000
      48–57\x30–\x39\60–\7101234567890≠000≠00≠0000≠0≠0
      58–64\x3A–\x40\72–\100:;<=>?@0≠000≠0≠0000000
      65–70\x41–\x46\101–\106ABCDEF0≠000≠00≠0≠0≠000≠0
      71–90\x47–\x5A\107–\132GHIJKLMNOP
      QRSTUVWXYZ      		0≠000≠00≠0≠0≠0000
      91–96\x5B–\x60\133–\140[\]^_`0≠000≠0≠0000000
      97–102\x61–\x66\141–\146abcdef0≠000≠00≠0≠00≠00≠0
      103–122\x67–\x7A\147–\172ghijklmnop
      qrstuvwxyz      		0≠000≠00≠0≠00≠000
      123–126\x7B–\x7E\172–\176{|}~0≠000≠0≠0000000
      127\x7F\177backspace character (DEL)≠000000000000
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/string/wide/iswprint&oldid=159086"
      [8]ページ先頭
      ©2009-2025 Movatter.jp