本科时参加小竞赛设计的一个代数运算器

1. 能对常用的四则运算，三角, 乘方,开方运行2. 支持变量赋值和运算　　3. 增加批处理执行功能（批处理脚本文件）

　　4. 增加对向量或矩阵运算的支持，如输入

-Undergraduate to participate in the design a little contest an algebraic calculator. Can commonly used four arithmetic, trigonometry, involution, prescribing run 2. Supports variable assignments and operations 3. Increase the batch executive function (a batch scr ipt file) 4. increase support for vector or matrix operations, such as the input