Display Multi Rooted tree

Guys, please see the attached image

I want to display that tree using C ++

By defining nodes for each level and then connecting them

Please can someone help me out ..

what did you try so far? In code?

Looks like World of Goo!

Seriously though, are you wanting to draw this graphically? If you you'll need to provide information like the target platform, so people can start suggesting graphics APIs.