Hello! Although not C, but C++ there is a project aiming at this - http://code.google.com/p/solcpp/
However I don't know how usable that is, you can just make pure HTTP calls and process the response. -- Regards, Rafał Kuć Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch - ElasticSearch > Hi All, > Is there any C API for Solr?? > Thanks and regards, > Romita