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isalpha (3)
  • >> isalpha (3) ( FreeBSD man: Библиотечные вызовы )
  • isalpha (3) ( Русские man: Библиотечные вызовы )
  • isalpha (3) ( Linux man: Библиотечные вызовы )
  • isalpha (3) ( POSIX man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    
    
    isalpha
    
     - alphabetic character test
    
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <ctype.h>
    int isalpha (int c);
     

    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 Vt 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''"

     

    RETURN VALUES

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

    COMPATIBILITY

    The BSD 4.4 extension of accepting arguments outside of the range of the Vt 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), ascii(7)  

    STANDARDS

    The isalpha ();
    function conforms to St -isoC .


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    COMPATIBILITY
    SEE ALSO
    STANDARDS


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