探讨Visual C++2010环境下浮点型数据的存储形式  

Discusses the Storage Form of Floating Point Data in Visual C++2010 Environment

作　　者：王兆华[1] WANG Zhao-hua(School of Computer Science and Cyber Security,Communication University of China,Beijing 100024,China)

机构地区：[1]中国传媒大学计算机与网络空间安全学院,北京100024

出　　处：《电脑知识与技术》2020年第23期41-44,49,共5页Computer Knowledge and Technology

基　　金：中国传媒大学校级工科规划项目(Project No.3132013XNG1337)。

摘　　要：针对高校本科生课程《C语言程序设计》中有关浮点数数据类型的认识和使用中出现的问题,学生存在对浮点数的认知不够清晰,对Visual C++2010环境下有关浮点数的相关计算结果存在各种困惑。根据多年的教学经验,查阅相关书籍和IEEE754标准,论文分析Visual C++2010环境下浮点型数据的存储形式,阐述了有关浮点数相关几个重要知识点的理解。文中引入计算思维的指导思想,采用从现象到本质,从理论到实践来逐步解决问题。实践证明,该方法取得的了较好的学习效果,夯实了学生对基础知识的掌握和正确应用。In view of the problems in the understanding and use of floating point data types in the undergraduate course C Language Programming,students are not clear enough about Floating point number,and they are confused about the calculation results of Floating point data in the Visual C++2010 environment.According to years of teaching experience,consult relevant books and IEEE754 standard,the paper analyzes the storage form of floating point number in Visual C++2010 environment,and expounds the understanding of several important knowledge points related to floating point Numbers.This paper introduces the guiding ideology of computational thinking and solves the problem step by step from phenomenon to essence and from theory to practice.The prac⁃tice has proved that the method has achieved a good learning effect.The students'mastery and correct application of basic knowl⁃edge are consolidated.

关 键 词：浮点数 IEEE754 存储形式 Visual C++2010环境 计算思维 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]