自动出题系统，恩。是100以内的+-*/，自己可以改成别的也可以。反正给了源代码哦，呵呵，没事做把以前的传上来！-Auto-topic and systems, En. 100 within the+-*/, they can also be changed to another. Anyway, to the source code for Oh, Oh, nothing better to do replace the previous pass up!