isalpha(3) [freebsd man page]

ISALPHA(3)						   BSD Library Functions Manual 						ISALPHA(3)

NAME

     isalpha -- alphabetic character test

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <ctype.h>

     int
     isalpha(int c);

     int
     isalpha_l(int c, locale_t loc);

DESCRIPTION

     The isalpha() function tests for any character for which isupper(3) or islower(3) is true.  The value of the argument must be representable
     as an unsigned char or the value of EOF.

     In the ASCII character set, this includes the following characters (with their numeric values shown in octal):

     101 ``A''	   102 ``B''	 103 ``C''     104 ``D''     105 ``E''
     106 ``F''	   107 ``G''	 110 ``H''     111 ``I''     112 ``J''
     113 ``K''	   114 ``L''	 115 ``M''     116 ``N''     117 ``O''
     120 ``P''	   121 ``Q''	 122 ``R''     123 ``S''     124 ``T''
     125 ``U''	   126 ``V''	 127 ``W''     130 ``X''     131 ``Y''
     132 ``Z''	   141 ``a''	 142 ``b''     143 ``c''     144 ``d''
     145 ``e''	   146 ``f''	 147 ``g''     150 ``h''     151 ``i''
     152 ``j''	   153 ``k''	 154 ``l''     155 ``m''     156 ``n''
     157 ``o''	   160 ``p''	 161 ``q''     162 ``r''     163 ``s''
     164 ``t''	   165 ``u''	 166 ``v''     167 ``w''     170 ``x''
     171 ``y''	   172 ``z''

     The isalpha_l() function takes an explicit locale argument, whereas the isalpha() function uses the current global or per-thread locale.

RETURN VALUES

     The isalpha() function returns zero if the character tests false and returns non-zero if the character tests true.

COMPATIBILITY

     The 4.4BSD extension of accepting arguments outside of the range of the unsigned char type in locales with large character sets is considered
     obsolete and may not be supported in future releases.  The iswalpha() function should be used instead.

SEE ALSO

     ctype(3), islower(3), isupper(3), iswalpha(3), xlocale(3), ascii(7)

STANDARDS

     The isalpha() function conforms to ISO/IEC 9899:1990 (``ISO C90'').  The isalpha_l() function conforms to IEEE Std 1003.1-2008 (``POSIX.1'').

BSD
								   July 17, 2005							       BSD

ISGRAPH(3)						   BSD Library Functions Manual 						ISGRAPH(3)

NAME

     isgraph -- printing character test (space character exclusive)

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <ctype.h>

     int
     isgraph(int c);

     int
     isgraph_l(int c, locale_t loc);

DESCRIPTION

     The isgraph() function tests for any printing character except space (' ') and other locale-specific space-like characters.  The value of the
     argument must be representable as an unsigned char or the value of EOF.

     In the ASCII character set, this includes the following characters (with their numeric values shown in octal):

     041 ``!''	   042 ``"''	 043 ``#''     044 ``$''     045 ``%''
     046 ``&''	   047 ``'''	 050 ``(''     051 ``)''     052 ``*''
     053 ``+''	   054 ``,''	 055 ``-''     056 ``.''     057 ``/''
     060 ``0''	   061 ``1''	 062 ``2''     063 ``3''     064 ``4''
     065 ``5''	   066 ``6''	 067 ``7''     070 ``8''     071 ``9''
     072 ``:''	   073 ``;''	 074 ``<''     075 ``=''     076 ``>''
     077 ``?''	   100 ``@''	 101 ``A''     102 ``B''     103 ``C''
     104 ``D''	   105 ``E''	 106 ``F''     107 ``G''     110 ``H''
     111 ``I''	   112 ``J''	 113 ``K''     114 ``L''     115 ``M''
     116 ``N''	   117 ``O''	 120 ``P''     121 ``Q''     122 ``R''
     123 ``S''	   124 ``T''	 125 ``U''     126 ``V''     127 ``W''
     130 ``X''	   131 ``Y''	 132 ``Z''     133 ``[''     134 ``''
     135 ``]''	   136 ``^''	 137 ``_''     140 ```''     141 ``a''
     142 ``b''	   143 ``c''	 144 ``d''     145 ``e''     146 ``f''
     147 ``g''	   150 ``h''	 151 ``i''     152 ``j''     153 ``k''
     154 ``l''	   155 ``m''	 156 ``n''     157 ``o''     160 ``p''
     161 ``q''	   162 ``r''	 163 ``s''     164 ``t''     165 ``u''
     166 ``v''	   167 ``w''	 170 ``x''     171 ``y''     172 ``z''
     173 ``{''	   174 ``|''	 175 ``}''     176 ``~''

     The isgraph_l() function takes an explicit locale argument, whereas the isgraph() function uses the current global or per-thread locale.

RETURN VALUES

     The isgraph() and isgraph_l() functions return zero if the character tests false and return non-zero if the character tests true.

COMPATIBILITY

     The 4.4BSD extension of accepting arguments outside of the range of the unsigned char type in locales with large character sets is considered
     obsolete and may not be supported in future releases.  The iswgraph() function should be used instead.

SEE ALSO

     ctype(3), iswgraph(3), ascii(7)

STANDARDS

     The isgraph() function conforms to ISO/IEC 9899:1990 (``ISO C90'').  The isgraph_l() function conforms to IEEE Std 1003.1-2008 (``POSIX.1'').

BSD
								   July 30, 2012							       BSD