Software debugging is very important for software development. Especially for large software system developed by many devel-opment departments together,how to make correct debugging strategy for fixing,diagnosing and recovering of the software defect is very important work. In combination with the basic concept and process of the software development,the concept and the basic process of soft-ware debugging are described. According to the scale of software,the application software can be divided into three types,the large,the middle and the small. For them,the roles in software developing are introduced,the case charts are given respectively,and the features of software debugging during developing are inducted and analyzed. Then the preconditions of effective debugging,the principle and strategy of software debugging,the debugging technique for large software are concluded during the software development. At last,three typical cases of software debugging are introduced. Practice shows that deep research of the technique and theory of software debugging is con-tributed to improve the developing efficiency and quality of software and make the customer satisfied the demand of software better.%对于软件开发,软件调试是非常重要的环节.尤其是对于多个开发部门一起进行开发的大型软件系统,如何正确制定调试策略,进行软件缺陷定位、诊断和纠错是一项十分重要的工作.结合软件开发的基本概念和过程,叙述了软件调试的概念和软件调试的基本过程.根据软件规模,应用软件开发可以分为大、中、小三种模式;针对三种软件开发模式,分别介绍了软件开发的角色,给出了用例图,归纳分析了开发过程中软件调试的特点.之后归纳出了软件开发过程中有效调试的先决条件、软件调试原则和策略、大型软件调试技术.最后介绍了三个典型的软件调试案例.工作实践表明,深入研究软件调试的理论与技术,有助于提高软件开发效率和软件质量,更好地满足客户对软件产品的需求.
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