Windows Azure SDK for C++
Casablanca is preparing library for Linux/C++. Check out http://casablanca.codeplex.com/wikipage?title=Linux%20Features&referringTitle=FAQ
You can use Windows Azure Storage via many langueage SDK - http://blog.smarx.com/posts/windows-azure-storage-libraries-in-many-languages
I think better way than REST API is to use node.js SDK like below - http://www.windowsazure.com/en-us/develop/nodejs/how-to-guides/queue-service/ - http://d.hatena.ne.jp/waritohutsu/20120212/1329021441