CTYPE
Section: C Library Functions (3)
Index
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BSD mandoc
NAME
isalpha
isupper
islower
isdigit
isxdigit
isalnum
isspace
ispunct
isprint
isgraph
iscntrl
isascii
toupper
tolower
toascii
- character classification macros
SYNOPSIS
Fd #include <ctype.h>
Fa int c
Fn isalpha c
Fn isupper c
Fn islower c
Fn isdigit c
Fn isxdigit c
Fn isalnum c
Fn isspace c
Fn ispunct c
Fn isprint c
Fn isgraph c
Fn iscntrl c
Fn isascii c
Fn toupper c
Fn tolower c
Fn toascii c
DESCRIPTION
The above macros perform character tests and conversions on the integer
c
See the specific manual pages for more information.
SEE ALSO
isalpha(3),
isupper(3),
islower(3),
isdigit(3),
isxdigit(3),
isalnum(3),
isspace(3),
ispunct(3),
isprint(3),
isgraph(3),
iscntrl(3),
isascii(3),
toupper(3),
tolower(3),
toascii(3),
ascii(7)
STANDARDS
These functions, except for
Fn toupper ,
Fn tolower
and
Fn toascii ,
conform to
St -ansiC .
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
- STANDARDS
-
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