CPP parser/compiler code

这是个测试imsl的程序，很多朋友在装IMSL时出现问题，通过这个程序就能知道有没有成功装上IMSL了。-This is a test imsl program, many of my friends have problems loading IMSL, through this program will be able to know if there was a successful IMSL installed.

International Mathematical and Statistical Library

使用imsl数据库计算二阶微分方程，方法简洁快速(Using the IMSL database to calculate the two order differential equations, the method is simple and fast)