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< c | string

- (null-terminated byte string -- NTBS) , ( ). . , {'\x63','\x61','\x74','\0'} NTBS, "cat" ASCII.

<ctype.h>
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: ctype.h , to is , , .

ASCII

iscntrl
iswcntrl

isprint
iswprint

isspace
iswspace

isblank
iswblank

isgraph
iswgraph

ispunct
iswpunct

isalnum
iswalnum

isalpha
iswalpha

isupper
iswupper

islower
iswlower

isdigit
iswdigit

isxdigit
iswxdigit

08 \x0\x8 \0\10 (NUL . .) 0 0 0 0 0 0 0 0 0 0 0 0
9 \x9 \11 (\t) 0 0 0 0 0 0 0 0 0 0 0 0
1013 \xA\xD \12\15 - (\n, \v, \f, \r) 0 0 0 0 0 0 0 0 0 0 0 0
1431 \xE\x1F \16\37 0 0 0 0 0 0 0 0 0 0 0 0
32 \x20 \40 0 0 0 0 0 0 0 0 0 0 0 0
3347 \x21\x2F \41\57 !"#$%&'()*+,-./ 0 0 0 0 0 0 0 0 0 0 0 0
4857 \x30\x39 \60\71 0123456789 0 0 0 0 0 0 0 0 0 0 0 0
5864 \x3A\x40 \72\100 :;<=>?@ 0 0 0 0 0 0 0 0 0 0 0 0
6570 \x41\x46 \101\106 ABCDEF 0 0 0 0 0 0 0 0 0 0 0 0
7190 \x47\x5A \107\132 GHIJKLMNOP
QRSTUVWXYZ
0 0 0 0 0 0 0 0 0 0 0 0
9196 \x5B\x60 \133\140 [\]^_` 0 0 0 0 0 0 0 0 0 0 0 0
97102 \x61\x66 \141\146 abcdef 0 0 0 0 0 0 0 0 0 0 0 0
103122 \x67\x7A \147\172 ghijklmnop
qrstuvwxyz
0 0 0 0 0 0 0 0 0 0 0 0
123126 \x7B\x7E \172\176 {|}~ 0 0 0 0 0 0 0 0 0 0 0 0
127 \x7F \177 (DEL) 0 0 0 0 0 0 0 0 0 0 0 0
<stdlib.h>

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<inttypes.h>
intmax_t uintmax_t
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<string.h>

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(C23)

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<string.h>

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<string.h>

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<string.h>

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  • C11 (ISO/IEC 9899:2011):
  • 7.4 <ctype.h> (. 200-204)
  • 7.8 <inttypes.h> (. 217-220)
  • 7.22 <stdlib.h> (. 340-360)
  • 7.24 <string.h> (. 362-372)
  • 7.31.2 <ctype.h> (. 455)
  • 7.31.5 <inttypes.h> (. 455)
  • 7.31.12 <stdlib.h> (. 456)
  • 7.31.13 <string.h> (. 456)
  • K.3.6 <stdlib.h> (. 604-613)
  • K.3.7 <string.h> (. 614-623)
  • C99 (ISO/IEC 9899:1999):
  • 7.4 <ctype.h> (. 181-185)
  • 7.8 <inttypes.h> (. 198-201)
  • 7.20 <stdlib.h> (. 306-324)
  • 7.21 <string.h> (. 325-334)
  • 7.26.2 <ctype.h> (. 401)
  • 7.26.4 <inttypes.h> (. 401)
  • 7.26.10 <stdlib.h> (. 402)
  • 7.26.11 <string.h> (. 402)
  • C89/C90 (ISO/IEC 9899:1990):
  • 4.3 <ctype.h>
  • 4.10 <stdlib.h>
  • 4.11 <string.h>
  • 4.13.2 <ctype.h>
  • 4.13.7 <stdlib.h>
  • 4.13.8 <string.h>

.

C++ -

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