2d game developments

At school we start learning how to write 2D games using C Allegro United and libraries. Now, I'm wondering which library is more suitable for writing games 2D? There is no other libraries out there, is there any of those better?

Actually what you're asking libraries are best suited for writing 2D games because I do not want to be thought lame way to school so I have to get used to a different way later in life because if what I thought was not good.
Now I have the most certainly to learn more and maybe something else later anyway, but you can understand that I do not want to study something useless.

>>3
You need to find a better automatic translator.
At school, C library to use the United States and Allegro, 2D start learning to write games. Now, I'm in the library, the more games I think 2D is suitable for writing? Than either is there, there are other libraries, what is?

I do, because after what I thought it was good life, if I have to get used to it another way, in fact, be considered in order to avoid a lame way to school I 2D library is the best suited for those looking to create a game.
Now, I'm just more later, but for most certainly learn something, maybe you can understand that there is no intention to study something useless to me.