How hard is it to code a game in C++?

I'm just wanting a rough estimation here, but I, like most of the 4chan community, have ideas for games, or movies, or what have you.

So I'm learning C++, and I'm doing pretty good with everything I've learned so far.  I'm only taking a beginning course in my college, but I'm still doing good in it.

So, if I wanted to create a platform game, or a fighting game, or even a tile game (Pokemon Clone), how hard is it?

If I already had all the graphics, all the story written out, and all the gameplay mechanics worked out, how long, and how hard would it be to create a game from scratch, using just C++?

>>8
You don't need databases, you hardly need game theory and economics to create games of most kinds, and you don't always need to deal with networking, lag, etc. You do need to do C/C++, OpenGL (or buy an engine, but you'll still have to do stuff), AI, 3D modelling, textures, shaders, animation, physics (or buy Havok), sound (or buy sound FX from a library), and music.