31046040系统级编程_A.docx

一、单项选择题（本大题共30小题，每小题1分，共30分）提示：在每小题列出的四个备选项中只有一个是符合题目要求的，请将其代码填写在下表中。错选、多选或未选均无分。InVisualC++,aWin32ConsoleApplicationis A.thestatuswindowoftheVisualC++environmentthesimplesttypeofapplicationVisualC++cangenerateaprogramthatisabletocontroltheoperatingsystemofawindowscomputerbuiltbyusingsophisticatedApplicationWizardsWhenusingadebuggertofindthecauseofaprogramsincorrectbehavior, A.itisoftennecessarytostarttheprogrammultipletimesunderthedebuggertheprogramisusuallyexecutedtothepointatwhichthebehavioroccursandthenexecutedbackwardstofindthe causethefaultycodefragmentmustfirstbeidentifieditisfastesttostartbystoppingthedebuggerlongbeforethebehaviorappearshowis-11(decimal)representedinan8-bit2scomplementbinaryformat?AhatistheoutputofthisCcode?#includestdio.h voidmain() {intx=4;int*p=x; int*k=p++; intr=p-k; printf(%d,r);}A.4B.8C.1D.RuntimeerrorExplainthefeatureofstack.A.stackcannotreuseitsmemoryB.AllelementsareofdifferentdatatypesC.AlloperationsareatoneendD.AnyelementcanbeaccessedfromitdirectlyajumpinstructionA.changesapointertopointtothenextelementofanarray B.unconditionallysetstheprogramcountertoitsoperandC.increasestheprogramcounterD.changestheprogramcounteronlyifitsoperandisequaltozeroinc,assumingthataninttakes4bytes,howmanybytesarerequiredtorepresentthefollowingarray? inta[12];A.44B.52C.12D.48giventhefollowingdeclarationandinitializationofs,whatisthevalueoftheexpressions[6]? chars[]=string;(10.0分)A.gB.\0C.\nD.anunpredictablevalueactivationrecordsareorganizedinstacksbecause?A.stacksallowactivationrecordstobepushedandpoppedinanyorder. B.stacksaresimpleenoughforthehardwaretomanage.C.functionsneedtoaccessallthevariablesofthefunctionsthatcallthem. D.theyareseldmneededduringprogramexecution.whenexecutingafunctioncallee(),whichofthefollowingaretrueregardingthevalueoftheframepointer?i.itmarksthetopofthestackframeofthefunctionthatinvokedcallee(). ii.itmarksthebottomofthestackframeofcallee()iii.itisthetopofthestack.A.iiionlyB.iionlyC.ionlyD.i