output unicode

[eric]

Dear advanced c/g++ programers:
  after I copied and compiled last email's code
  I tested it, with your suggestion (put POSIX and C behind it), they 
run (generate locale),
but
all test failed to make output file with size > 0
so if you can plz help again, and thank a lot in advance, Eric

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eric@eric-laptop:~/cppcookbook$ ./a.out
trying to access locale el_GR.utf8
Couldn't generate locale el_GR.utf8: locale::facet::_S_create_c_locale
name not valid
Error when writing to file
eric@eric-laptop:~/cppcookbook$ ls -l -a unicode.txt
-rw-r--r-- 1 eric eric 0 2011-06-27 08:31 unicode.txt
eric@eric-laptop:~/cppcookbook$ ./a.out POSIX
trying to access locale POSIX
Generated locale C
Error when writing to file
eric@eric-laptop:~/cppcookbook$ ./a.out C
trying to access locale C
Generated locale C
Error when writing to file
eric@eric-laptop:~/cppcookbook$ ./a.out B
trying to access locale B
Couldn't generate locale B: locale::facet::_S_create_c_locale name not
valid
Error when writing to file
eric@eric-laptop:~/cppcookbook$
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