Encoding problem with C API

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Hi guys,

I am having a problem with the encoding. I have a mysql server running and I have two tables defined to use UTF-8 encoding. I can write to the database in chinese and view them from the mysql-query-browser.

When I try to read the data out using C API, the chinese characters are displayed as ???. I am not sure why this is happening. I suppose the output from the mysql server should be in utf8 encoding. Am I right? I try to display them with printf("%s",data), but I got ??? chars. I am using it under Gentoo Linux with 2.6 kernel. The default encoding of system is GB18030. But even if I set the system encoding to zh_CN.UTF-8, it still won't work.

Any idea how to retrieve and display the data correctly? Any help is appreciated. Thank you.