申请的是2D graphic software engineer。是hiring manager打来的。开始问了一堆简
历上project的问题，对graphic相关的问的很细，使用过的开发软件，还有具体的指令
。（问我的是VC和openGL的），谈到了具体算法，有没有更好的solution等等，有没有
遇到annimation刷新频率不够之类这种问题（这里答的比较烂）。
behavior question
1. why apple
2. what are you strenths
3. weakness
4. confilict with collegue (have you ever convinced them?)
5. have you ever got any performance problem when you implementing you proj
ect? if any, how did you deal with that?
c/c++ question
1. difference between struct and class
2. reverse a
