ctype man page on BSDi
[printable version]
CTYPE(3) BSD Programmer's Manual CTYPE(3)
NAME
isalpha, isupper, islower, isdigit, isxdigit, isalnum, isspace, ispunct,
isprint, isgraph, iscntrl, isascii, isblank, toupper, tolower, toascii -
character classification macros
SYNOPSIS
#include <ctype.h>
int c
isalpha(c);
isupper(c);
islower(c);
isdigit(c);
isxdigit(c);
isalnum(c);
isspace(c);
ispunct(c);
isprint(c);
isgraph(c);
iscntrl(c);
isascii(c);
isblank(c);
toupper(c);
tolower(c);
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), isblank(3), toupper(3), tolower(3),
toascii(3), ascii(7)
STANDARDS
These functions conform to ANSI C X3.159-1989 (``ANSI C '').
BSDI BSD/OS April 19, 1991 1
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