Generalization of Program Comprehension for Intelligent Progamming Environment for Learnig Programming

随着高度信息化社会的反映，人们对学习编程的智能编程环境的需求也在逐年提高。要实现这样一个基于智能计算机辅助教学概念的系统，系统必须具有先进的功能，以便能够检测出不完整的学生程序代码中的逻辑错误，并提出建议，不仅可以修复这些错误，还可以提供适当的编程知识。我们已经为PASCAL程序开发了一个理解ALPUS的基于知识的程序。在这个项目中，我们基于AUPUS的概念和技术开发了一个通用的程序理解。其方法是：首先将不完整的学生程序代码转换为为该项目开发的一种语言无关的编程语言AL语言形式，然后对其进行规范化以减少各种编码风格，然后利用知识库中的编程知识通过模式匹配的方式进行理解，最后给学生提供建议。该系统展示了快速排序程序的有趣功能。为了在全球范围内提供该系统，我们正在尝试在互联网环境下实施该系统。

According to the reflex of highly informatized society the demands as well as needs for an intelligent programming environment for learning programming have been incleased year by year. To realize such a system based on the concepts of Intelligent CAI the system has to have advanced features so that it is able to detect logical errors in incomplete students' program code and give advice not only to fix them but also to give proper knowledge on programming. We already had developed a knowledge-based program understander ALPUS for Pascal programs. In this project we have developed a generalized program understander based on the concepts and technologies od AUPUS.The outline of the methods is as follws : at first, incomplete student's program code is converted to the AL language form which is a language independent programming language developed for this project, next, it is normalized to minimize a variety of coding styles, then, it is comprehended by means of pattarn matching using the programming knowledge within the knowledge base, and finally, advice is produced for the student. The system demonstrates interesting features for Quicksort programs. Inorder to provide the system in world wide we are trying to implement it in Intemet environment.