软件工程知识回顾概要.ppt
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1、软件工程基本知识简介软件工程基本知识简介主要参考教材主要参考教材张海藩,软件工程,人民邮电出张海藩,软件工程,人民邮电出版社,版社,2010。 S. L. Pfleeger,软件工程,人民,软件工程,人民邮电出版社,邮电出版社,2007.Lan Sommerville, 软件工程软件工程(英文版第英文版第7版版),Software Engineering, Seventh Edition, 机机械工业出版社,械工业出版社,2004.11,ISBN 7-111-15309-X1软件工程知识回顾软件工程知识回顾2023-3-10Junwei Ge4#include void main()int a
2、,b;coutab; int c; c=a/b;int d=a%b;coutn a/b=cend; coutn a%b=dend; 问题问题1请讨论以下请讨论以下C+程序的作用和不足?程序的作用和不足?/I/O流库头文件流库头文件/输出提示语输出提示语/对对a、b变量输入变量输入/变量可随用随定义变量可随用随定义/输出输出a除以除以b的商的商/输出输出a除以除以b的余数的余数CQUPT 葛君伟5IT is now one of the largest corporate expenses outside employee costs4Organizations and governments
3、spend an estimated $1 trillion on IT hardware, software, and services worldwide.4The average company spends about 4 to 5 percent of revenue on IT.4The companies that are highly IT dependentsuch as financial and telecommunications companiesspending more than 10 percent on it.CQUPT 葛君伟6Governments are
4、 big consumers ofsoftware 4The United Kingdom had more than 100 major government IT projects under way that totaled $20.3 billion.4The U.S. government cataloged 1200 civilian IT projects costing more than $60 billion, plus another $16 billion for military software.CQUPT 葛君伟7Governments are big consu
5、mers ofsoftware4Any one of these projects can cost over $1 billion. For example, the computer modernization effort at the U.S. Department of Veterans Affairs is projected to run $3.5 billion, while automating the health records of the UKs National Health Service is likely to cost more than $14.3 bil
6、lion for development and another $50.8 billion for deployment.4Such megasoftware projects are now much more common, as smaller IT operations are joined into “systems of systems.” Air traffic control is a prime example, because it relies on connections among dozens of networks that provide communicat
7、ions, weather, navigation, and other data.2023-3-10Junwei Ge8问题问题2你应如何开发一个电信业务管理系统?你应如何开发一个电信业务管理系统?2023-3-10CQUPT91软件工程知识回顾软件工程知识回顾1.1软件工程的基本概念软件工程的基本概念vWhat is software?v具有以下特征的实体具有以下特征的实体(Entities)可以被看成软件。可以被看成软件。 They Are Non-tangible, and Non-physical, but Often Intended to Manage Tangibles. Hi
8、erarchical Structure Is a Common Feature. They Consist of Components Having Different Purposes. All Are Expected to Require Modification/Evolution. Interconnections Are Key. Analysis and Verification Are Universal Underlying Needs.2023-3-10CQUPT101软件工程知识回顾软件工程知识回顾1.1软件工程的基本概念软件工程的基本概念vWhat is comput
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