摘要
针对编程过程中常见的公式更改及扩充情况,设计了一种基于语法树和算符优先法的计算系统,可提供公式输入、界面维护以及动态计算的完整功能。
In developing information system it is often necessary to compute the result of some given formulas. For formulas that are often altered or extended as demanded, difficulty will appear when implementing the program. In the paper, an information system that supplies the complete functions of accepting formula input, maintaining interface, and computing dynamically is designed and implemented.
出处
《上海理工大学学报》
CAS
北大核心
2003年第3期271-276,共6页
Journal of University of Shanghai For Science and Technology
关键词
语法树
算符优先法
自动计算
syntax tree
operator precedence
automatic computing
