MEDB宿主C预编译程序

An MEDB Host C Precompiler Program

ＭＥＤＢ是一个自行研制的具有自主版权的微机工程数据库管理系统．在讨论ＭＥＤＢ宿主系统结构的基础上，论述了宿主Ｃ预编译程序在扫描方案确定、目标代码设计与生成、用户查错方式等方面的策略与技术．实践证明，ＭＥＤＢ宿主Ｃ预编译程序具有体积小、编译速度快、查错方便等优点。

On the basis of the structure of the host system for a micro-computer engineeringdatabase management system(MEDB),problems concerning the MEDB host C precompiler,including the scanning scheme,object code design and generation,user’s error checking,etc. are discussed. This compiler has many advantages that the volume of code is small,thecompiling speed is rapid,the structure of object program is compact and checking errors isconvenient for user.Because that the techniques,such as the scheme needed for scan onlyone time,direct object code,changing structural data into characters stream due to usingpointer and a good solution for checking errors,are used.