Maybe with lines made up of a series of dashes hinged at their endpoints (depicted say by a star) showing movement capability in 3 axies at right angles to each other......maybe? Start by drawing a rectangle representing one of these 3 planes.
For what the OP is look to accomplish, OpenGL would be overkill, stick with SDL for 2d work. MrX, you need to get clear expectations from your lecturer on exactly what he/she wants.
I'd download any graphic mode library for C++, with basic functions, like plot() or drawline().
You can use Allegro.cc, which is a game-making library that includes those functions. However, that might be way too complicated.
Maybe you should ask your lecturer about what to use. Probably he/she wants certain software to be used.