Development of a PC program with simulations > how to start?

Question

I'm learning C++, and further more want to build a PC program with visual resources (simulations, at first), about mathematical topics. So, what is the best language to build the structure (the basis program and the graphic interface), and the visual models? I'm a starter, so even doing a lot of research, i will aprecciate if you give me details about what should I start learning :) thanks!

Answer 1

Java and VB.net/c# GUI

Answer 2

sfml, openGL, Qt there are lots...