C++程序设计课件：Chapter1 Overview of Programming and Problem Solving

1、11/29/2021C+程序设计 教师：1C+程序设计（1）11/29/2021C+程序设计 教师：2课程介绍nC+基础知识（类，模版）nMicrosoft Visual C+ 6.0nVC+6 guide.pdf nVC 6 IDE 介绍11/29/2021C+程序设计 教师：3An Examplen#include nint main()nncouthello,world!;nreturn 0;n11/29/2021C+程序设计 教师：4考核方式n期末闭卷考核占50% necnucpp平台考核，出勤等平时成绩占50% 11/29/2021C+程序设计 教师：5参考书目书名：书名：C+C+程

2、序设计语言程序设计语言 英文书名：英文书名：The C+ Programming LanguageThe C+ Programming Language作者：作者：Bjarne StroustrupBjarne Stroustrup11/29/2021C+程序设计 教师：6参考书目书名：书名：C+ C+ 编程思想（编程思想（2nd2nd）英文书名：英文书名：Thinking in C+(Second Edition)Thinking in C+(Second Edition)作者：作者：Bruce EckelBruce Eckel11/29/2021C+程序设计 教师：7参考书目书名：书名：C

3、+ Primer 英文书名：英文书名：C+ Primer 作者：作者：Lippman11/29/2021C+程序设计 教师：8参考书目书名：书名：Effective C+ 英文书名：英文书名：Effective C+ 作者：作者：Scott Meyers译者：译者：侯捷侯捷11/29/2021C+程序设计 教师：9参考书目书名：书名：More Effective C+英文书名：英文书名：More Effective C+:35 New Ways to Improve Your Programs and Designs作者：作者：Scott Meyers译者：译者：侯捷侯捷11/29/2021C

4、+程序设计 教师：10Chapter1OverviewofProgrammingandProblemSolvingn1.1 Overview of ProgrammingnComputer Program a sequence of instructions to be performed by a computer.nComputer Programming the process of planning a sequences of steps for a computer to follow.nThe computer allows us to do tasks more efficie

5、ntly, quickly and accurately.11/29/2021C+程序设计 教师：11Programs life cycle1. Problem-Solving Phase (requirement analysis and specification; algorithm design)nAlgorithmA step-by-step procedure for solving a problem in a finite amount of time.2. Implementation Phase (coding; debugging; testing)3. Maintena

6、nce Phase (using; correct; improving)nIterative procedure. nProgram commentsnDocumentation11/29/2021C+程序设计 教师：12Two Algorithm ExamplesBOOK P41.Start your car.2.Determine an employees weekly wages.11/29/2021C+程序设计 教师：13From Algorithm to Program11/29/2021C+程序设计 教师：14From Algorithm to ProgramnProgrammi

7、ng language:nA set of rules, symbols, and special words used to construct a computer program.nC+ is an example of Programming Language.nOthers: JAVA, C#, Pascal, BASICnTranslating an algorithm into a programming language is called coding the algorithm.nThe combination of coding and testing an algori

8、thm is called implementation.11/29/2021C+程序设计 教师：15Determine an employees weekly wages.nSource file : PAYROLL.CPPnExecution file : payroll.exenExample Under Folder Payroll11/29/2021C+程序设计 教师：16Program Executioninput dataprogramoutputdata11/29/2021C+程序设计 教师：17程序调试debugging的一些方法n可能的程序分支都思考一遍可能的程序分支都思考

9、一遍n在主程序的关键点添加重要变量输出语句或设置断点在主程序的关键点添加重要变量输出语句或设置断点n在函数的调用前后添加重要变量输出语句或设置断点在函数的调用前后添加重要变量输出语句或设置断点11/29/2021C+程序设计 教师：18软件测试testingn测试只能证明BUG的存在，永远不能证明BUG的不存在。n测试的主要方法n黑盒法n白盒法11/29/2021C+程序设计 教师：19Language CategorynMachine language binary formnLow-level language Assembly language nHigh-level language

10、C+, PascalnNatural language English, French, Germann11/29/2021C+程序设计 教师：20From Source Program to Object ProgramobjectsourceCompilerSource program: A program written in a high-level programming language.Compiler: A program that translates a high-level language into machine code.Object program: The ma

11、chine language version of a source program.BOOK P7 Figure 1-3A computer can do: P811/29/2021C+程序设计 教师：21C+ CompilersnMicrosoft Visual C+nBorland C+nLinux GNU C+nnISO/ANSI Standard C+11/29/2021C+程序设计 教师：22Four Basic control structuresnSequentiallynConditionallynRepetitivelynWith subprograms (Divide a

12、nd Conquer)nBOOK P10 Figure1-611/29/2021C+程序设计 教师：23Computer SystemnHardware(P11 Figure 1-7)nCPUnALU Perform arithmetic and logical operations.nControl unit controls the actions of the other components.nMemorynI/O devicenPeripheral devicenSoftwarenOperating SystemnA set of programs that manages all

13、of the computers resources.nApplication11/29/2021C+程序设计 教师：24Problem-SolvingTechniquesnAsk QuestionsnLook for Things That Are FamiliarnSolve by AnalogynMeans-Ends AnalysisnDivide and Conquer(Functional Decomposition-FD, Object-oriented Design-OOD)nThe Building-Block ApproachnMerging SolutionsnRewriting the problem in your own words11/29/