^__^ said:
You obviously can't ask for her number since she'll say " why? I'll only see you tomorrow." or some sh1t like that.
Limiting belief. Bad sir, very bad. You've already been defeated in your mind's eye...that rarely leads to anything positive.
You have two options here pretty much...you can get her number for academic purposes and then try to transition out of that...this is fairly easy. "Hey we should study together on Thursday, what's your number?"
Or, you can be more straight forward and get her number for social reasons. Here, you have more options:
After class: "Hey I'm hungry, wanna grab something to eat?" Easy transition.
"Hey let's go get some coffee." Easy transition.
"Hey let's get together soon, I might have some free time on Sunday. What's your number?"
"What's your number?"
THE POINT IS, if your game is tight, she'll give up the number pretty easily no matter which one of these approaches you take. Since you see her every day, it is NOT IMPERATIVE that you get her number the first day. Flirt with her a few days...be playful and fun. Be interesting. Then go for the number in a day or two. But do NOT wait too long...the longer you wait, the more chances that she'll lose interest.