Man Page isalnum.3

                       Standard C++ Library
             Copyright 1998, Rogue Wave Software, Inc.

NAME

     isalnum

      - Determines if a character is alphabetic or numeric.

SYNOPSIS

     #include <locale>
     template <class charT>
     bool isalnum (charT c, const locale& loc) const;

DESCRIPTION

     The isalnum_function returns true if the character passed as
     a  parameter is either part of the alphabet specified by the
     locale parameter or a decimal digit. Otherwise the  function
     returns  false.    The  check  is made using the ctype facet
     from the locale parameter.

EXAMPLE

     //
     // isalnum.cpp
     //

     #include <iostream>

     int main ()
     {
      using namespace std;

      locale loc;

      cout << isalnum('a',loc) << endl;
      cout << isalnum(',',loc) << endl;

      return 0;
     }

SEE ALSO

     Other 'is' functions, locale, ctype