《c语言英文词典》课件

PPT coursewarefor ClanguageEnglish dictionary•Introduction toC Language•Basic Grammarof C Language•Advanced knowledgeof C language•Common LibraryFunctions in CLanguage目•C programmingstandards andtechnologies•Case analysisof C language录contents01Introduction toC LanguageTheDevelopment Historyof C LanguageOver theyears,CLanguagehasC Languagewas firstdeveloped inbecomeone of the mostpopular1972by DennisRitchie atBellprogramming languagesin theLabsworldItwas designedto bea systemprogramminglanguage fortheUnix operatingsystemThe characteristicsand advantagesof C languagePortability FlexibilityCLanguage ishighly portable,meaning thatCLanguageprovides arich setof control structuresprograms writtenin Ccan becompiled andrun onthat allowdevelopers to write effectiveanddifferent platformswith minimalchanges maintainablecodesSystem ProgrammingPerformanceC Language is widely used forsystem CLanguage isknown forits performance,allowingprogramming,including operatingsystems,device developerstowriteeffective codethat runsclose todrivers,and embeddedsystems thehardwareThe applicationfields of C languageOperatingSystemsMany operatingsystems,including Linuxand macOS,arewritten in CSystem ProgrammingCLanguage is used forsystem programmingtasks such asdevice drivers,network programming,and systemutilitiesGames DevelopmentCLanguage isoften usedfor gamedevelopment dueto itsperformanceand lowlevel accessto thehardwareEmbedded SystemsCLanguageiswidelyused in embeddedsystems development,including microcontrollersand industrialcontrol systems02Basic Grammarof CLanguageDatatypeSummary:Describe thebasic data types inC Detailslanguage,including integer,floating point,character,and voidInteger:Used tostore wholenumbers,including Floatingpoint:Used tostore decimalnumbersboth positiveand negativenumbers CommonCommon types include`float`and`double`typesinclude`int`,`short`,`long`,and`longlong`Character:Used tostore singlecharacters TheVoid:Representatives anundefined type,type is`char`commonly usedas areturn typefor functionsthatdo notreturn avalueOperator•Summary:Discuss thevarious operatorsavailable inClanguage,including arithmetic,relational,logical,bitwise,and size of operatorsOperatorDetailsArithmeticoperators:`+`,`-`,`*`,`/`,`%`retainRelated operators:`==`,`!=`,``,``,`=`,`=`OperatorLogical operators``,`||`,``notBitwise operators``,`|`,`^`,`~`,``,``Size ofoperatorUsed todetermine thesizeof a datatype orobject inbytesControl structure•Summary:Explain thecontrolstructuresavailable inC language,including ifelse,switch case,while,do while,and forloopsControl structureDetailsIfelse:Used toperform differentactions basedon conditionsSwitchcase:Used toperform differentactions basedon thevalue of a variableControlstructureWhile loopDo whileloop ForloopRepeats ablock ofcode untilRepeat ablock ofcode atRepeats ablock ofcode aaspecified condition is falseleast onceand continueuntil specificnumber oftimes oraspecified conditionis falseuntil aconditionisfalseFunction0102030405Summary:Discuss theDetails Functiondeclaration:Function definition:Function calling:concept offunctions Specifythe name,Provides theactual Invokesthe functioninC language,return type,and code to beexecuted andpasses valuestoincluding functionparameters of a whenthe function is itsparametersdeclaration,definition,function calledand calling03Advanced knowledgeof ClanguagePointerand memory managementPointerUnderstanding the concept ofpointersand howthey areusedin C languageMemory managementUnderstandingthe memoryallocation and deallocationin CStructuresand ConsortiaStructureUnderstandingthe concept ofstructures and how to defineand usethem inCUnionUnderstanding theconcept ofunionsandhow todefineanduse themin CFileoperationFile I/OUnderstanding theconcept offile input/outputoperations inCFile manipulationLearninghowtoopen,read,write,and closefiles inCDynamic memory allocationMemory allocationUnderstandingtheconceptof dynamicmemoryallocationin CMemorydeallocationUnderstanding theconceptofmemory deallocationinC04Common LibraryFunctionsin CLanguageStandard LibraryFunctionsPrintf01This function is used to printformatted outputon theconsole Itis a standardfunction in the C language and is part of thestandardlibraryScanf02This functionis used to readinput fromthe useron theconsoleIt is a standardfunction in the C language and is part of thestandardlibraryExit03This functionis usedto terminatethe programIt isa standardfunction in the C language and is part of the standardlibraryMathematical LibraryFunctionsSinThis functionis usedto calculatethe sineof agiven angleIt isa mathematicalfunction in the Clanguage and is part ofthe mathematicallibraryCosThis functionis usedto calculatethe cosineofagiven angleIt isa mathematicalfunctionin theClanguageandispartofthe mathematicallibraryTanThis functionis usedto calculatethe tangentofagiven angleIt isamathematical functionin theClanguageandispartofthe mathematicallibraryString LibraryFunctionsStrlenThis functionis usedto findthe lengthofagivenstring It isastring functionin theClanguageand ispartofthestring libraryStrcpyThis functionisusedtocopy onestring toanotherstring Itisastring functionintheClanguageand ispartofthestring libraryStrcatThisfunctionisusedtoconcatenate twostrings Itisa stringfunctionintheClanguageandispartof thestringlibraryTime LibraryFunction•Time:Thisfunctionisusedto getthe currenttime Itisa timefunctionintheClanguageandispartof thetimelibrary05C programmingstandardsand technologiesCodespecificationUse standardC syntaxEnsurethat thecode followsto theofficial1Clanguagestandard to ensure portabilityandcompatibilityCommentingWrite clearand decidecomments to2explain thepurpose andfunctionality ofeachsection ofcodeFormattingUse consistentindentation,spacing,and3capitalization toimprove codereadabilityDebugging skillsDebuggingtoolsFamiliarity withdebugging toolslike gdbGNU Debuggerisessential forfinding andfixing errorsinCcodeError handlingImplementerror handlingmechanisms tomanage andrecoverfrom errorsthat mayoccur duringprogramexecutionLoggingUse loggingto recordimportant eventsand detecterrorsduring programexecutionPerformance optimization010203Profiling AlgorithmMemoryoptimization managementUseprofiling toolsto identifyAnalyze andoptimize algorithmsOptimize memoryusage byperformancebottlenecks inthe usedinthecodetoimprove avoidingmemory leaks,usingcode andoptimize themexecution speeddynamic allocationjudiciously,accordingly andutilizing cachefriendly datastructures06Case analysisofClanguageSimple case:Calculator•Function Description:Implement asimple calculatorthatcan performaddition,subtraction,multiplication,and divisionoperations.Simple case:CalculatorImplementation steps

1.Define acalculator classthat includesaddition,subtraction,multiplication,and divisionmethods.

2.Create acalculator objectandcallthe correspondingmethodfor calculation.Simple case:Calculator

010203041.The inputdatatype

3.Output calculationmatters needing attention

2.Consider exceptionneedsto bestrictlyresults.handling,suchasin casescontrolledto avoidwherethe divisoris

0.overflow orunderflow.Medium case:Implementation ofdata structuressuchas linked lists and binary trees•Function description:Implement twodata structures:linked listandbinary tree.Medium case:Implementation ofdata structuressuchas linkedlists andbinary treesImplementation steps

1.Define alinkedlistnode classthat containsdataand pointersto thenext node.

2.Implement linkedlist classes,includingmethods suchas insertion,deletion,andtraversal.Medium case:Implementation ofdata structuressuchas linkedlists andbinary trees

013.Define abinarytreenodeclass thatincludes pointerstodata andleft andright childnodes.

024.Implement binarytreeclasses,including methodssuchas insertion,search,andtraversal.Medium case:Implementation ofdata structuressuchas linkedlists andbinary treesmattersneedingattention

011.Consider memory management to avoid memoryleaks.02For binarytrees,balancing issuesneed tobe considered03toavoidperformance degradation.Complex case:Simple implementationofoperating systemkernel•Function Description:Implement asimpleoperating systemkernel,including processmanagement,memorymanagement,filesystem,and devicedrivers.Complex case:Simple implementationofoperating systemkernelImplementation steps

11.Design kernelarchitecture andinterfaces.

22.Implement aprocess management3module,including processcreation,switching,and destruction.Complex case:Simple implementationofoperating systemkernel

3.Implement amemorymanagementmodule,including memory01allocationandrecycling.

4.Implement afile systemmodule thatsupports basicfile operations.

025.Implement devicedriver modulesand interactwith hardware.03Complex case:Simple implementationofoperating systemkernelmatters needingattention

1.Ensure thestability andsecurity ofthekernel.

2.C onsi der mu ltit hre adin ga ndconcurrency issuestoensurereal-timeperformance ofthe kernel.THANK YOU。