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英文翻译--Viusal C++简介.doc

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英文翻译--Viusal C++简介.doc

TheViusalCbriefintroductionTheobjectorientedbasicconceptthinkingmodedecidedsolvesthequestionway,thetraditionalsoftwaredevelopmentusesfromthetopthoughtinstructionprogramming,soonthegoaldividesintocertainsubtargets,thesubtargetfurtherdividesagain,canprogramuntilthegoaltherealization.Theobjectorientedtechnologybringstheenormouschangeforthesoftwaredesigndomain,itcarriesontheproceduredevelopmentusingthesoftwareobject,thesocalledobjectiscontainsthedataandtothedatamanipulationcodeentity,orsaidisjoinssomeinthetraditionalconstructionofdatatobecalledthememberfunctiontheprocess,thusentrustswiththeobjectbythemovement.Butintheprogramming,theobjecthaswiththerealworldsomekindofcorrespondingrelations,wearepreciselyusethiskindofrelationstocarryonthedecompositiontothequestion.Lookedfromtheprogramlanguageanglethat,inanobjectthecodeandorthedatamaybethisobjectprivate,cannotbytheobjectoutsidepartdirectvisit.Thustheobjectprovidedonekindofhighlevelprotectiontopreventtheprocedurehasnothingtodowiththepartwrongrevisionorhasusedwronglytheobjectprivatepart.Whenattemptsfromtheobjecttoreceivedirectlywhichprotectsinternaldatacarriesontherevision,byprocedurerejection,onlythentheforeignservicefunctionmaterialwhichprovidesthroughtheobjectcantoitsinternaldatacarryontheessentialprocessing,thushasguaranteedthedataprocessingvalidity.Saysfromthissignificance,iscalledthiskindofcodeandthedatarelationtheseal.Inotherwords,thesealisprotectstheobjectseal,isabilitywhichhidestheinternaldetail.Entrustswithheavyresponsibilitytheaspectintheemphasissoftwaremodule,objectorientedtechnicalandthestandardindustrialdesignrulehasmoresimilarities.Intheobjectorientedlanguage,thekindisfoundstheobjectthekey,infactthekinddescribedaraceobjectpubliccharacteristicandtheoperation,buttheobjectistheconcreterealizationkind.Forexamplethecompactcarisabasicconcept,ithasthecolor,thegeometrysize,thedynamicperformancecharacteristic.Thenwemaydefineiscalledcarthekind,hasparametersandsooncolor,geometrysize,dynamiccharacteristic,aswellasdescriptionautomobileunderambientconditionstateofmotionmemberfunction.Aconcretecompactcarisanobject,therelatedparameterhastheconcretevalueinthisobject,andmayambientconditionparametergainthisvehicleconcretestateofmotionthroughtheinputexplanationvariable.TheobjectorientedtechnologybringsthefollowingprofitforthesoftwaredevelopmentReusability.Fromtheverybeginningtheobjectproductionisforthereuse,completesobjectinnextproceduredevelopmentbypartorcompletelyreuse.Reliability.Becausetheobjectorientedapplicationprocedurehascontainedthroughtheteststandardpart,thereforemorereliable.Becausethemassivecodesoriginatefromthematurereliablekindofstorehouse,thusdevelopstheproceduretheadditionalcodetoreduceobviouslynewly,thisisanimportantreasonwhichtheprocedurereliabilityenhances.Continuity.HasobjectorientedcharacteristicCandtheClanguagehastheverybigcompatibility,theCprogrammermaytransitquiteeasilytotheClanguagedevelopmentwork.TheobjectorientedlanguagehasthefollowingbasiccharacteristicAccesscontrol.Theobjectmustbeabletocarryontheprotectiontoitsinternalcertainelements,istheyonlycanbytheinternaluse,butnotexteriordisturbance.Inturn,theobjectmustcarryontherelationwithotherexteriorelements,inordertocarriesontheoperationtotheobject.InC,thekindhasprivateprivate,protectionprotectedandthepublicpublicthreekindofvisitmechanisms.Succession.Throughtohadtheobjecttocarryonthemethodwhichtheincreaseorthepartrevisetoestablishthenewobject,tohadtheobjecttobepossibletoincreasethedataandtheprocess,alsomaycarryontocertainprocessesanewdefines.Theinitialkindiscalledthebaseclass,expandsthekindfromthebaseclasstobecalledderivedclass.Fromhadthekindofderivationnewthingsesclassisinordertoobtainstronglypointed.Polymorphism.Thedirectpositiveecosystemissame,theinheritanceconstitutedakindofrace.Intheusualthesekindofraceskindhasthememberfunctionofthesamename,forexampletheODdistributionclassrace,hasangeneralbaseclass,twoderivedclassThegrowthfactorODdistributionclassandthegravitationalmodelODdistributionclass,thesekindsallhavetheExecmemberfunctionofthesamename.Thepolymorphismmeantexistencemanykindsofforms,canmakethepeopletoactivateintheprocedureanybelongtoODthedistributionclassraceskindofExecmemberfunction,eveninthetranslationmaynotneedtoknowspecificallytheobjectisbelongstogrowthfactorODthekindofgravitationalmodelODdistributionclass.Theobjectorientedarchitecturetechnologyishelpfultothefoundationprofessionalsoftwaredevelopmentorganization.Forexampletransportationplanalthoughhasthedifference,butvariouscitiesneedthesoftwarebasicallyissame,thisprovidedonekindofmanufactureforthesoftwaredevelopmentorganizationtopayattentiontoherelecturefacethetransportationplansoftwareframeisbutsoftwareframewasnotversatilesoftwaresanopportunity.Oncethiskindofframedevelopssuccessfully,mayrepeatedlyusemanytimes.Theobjectorientedtechnologysuitsspeciallyinreorganizessome

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