关键词: 程序理解, 可视化表示, 上下文关系, 控制结构, N-S图

Abstract: Program understanding is the technology that computer analyzes source code automatically and obtains the knowledge of program structure, an algorithm that represents program function with N-S figure is proposed for the analysis of program structure that belows the function level, based on the information extraction technology and the computer visualization technology. The method resolves the problems of graphical design, graphical zoom, graphical localization, graphical nested and so on. Experimental results show that it can generate N-S figure quickly and effectively, thus help the developers better understand the program source code efficiently.

Key words: program understanding, visual representation, context relation, control structure, N-S figure