ssd6选择题答案无重复.docx
- 文档编号:7672890
- 上传时间:2023-01-25
- 格式:DOCX
- 页数:31
- 大小:27.61KB
ssd6选择题答案无重复.docx
《ssd6选择题答案无重复.docx》由会员分享,可在线阅读,更多相关《ssd6选择题答案无重复.docx(31页珍藏版)》请在冰豆网上搜索。
ssd6选择题答案无重复
1.ConsiderthefollowingfragmentofC++sourcecode.
Stringmsg;unsignedintx;inty;
cin>>msg>>x>>y;
cout< Whichofthefollowingis(are)trueregardingexecutionofthesegment? Theinputstatementwillalwaystakethesameamountoftimetoexecute. Theoutputstatementwillalwaysbeexecutedimmediatelyaftertheinputstatement. Ifxandyarebothpositive,anintegergreaterthanbothwillbeprinted. (a)IIonly(b)none(c)IandIIonly(d)IIandIIIonly Correctansweris(b)Seesection1.1.1ofthecoursenotes. -------------------------------------------------------------------------------- 2.Integratedprogrammingenvironmentsmakeitdifficulttomixandmatchtoolsfromdifferentsources.Thisis (a)bad,becausenosinglevendorislikelytobethesourceofallthebesttools (b)good,becauseitensurescompilationisnotdoneincrementallybyaccident (c)bad,becauseallthetoolswillthenhavethesameuserinterface (d)good,becausetoolsfromdifferentsourcescannotbemadetointeractwitheachother Correctansweris(a)Seesection1.1.4ofthecoursenotes. -------------------------------------------------------------------------------- 3.InVisualC++,aWin32ConsoleApplicationis (a)aprogramthatisabletocontroltheoperatingsystemofawindowscomputer (b)thesimplesttypeofapplicationVisualC++cangenerate (c)thestatuswindowoftheVisualC++environment (d)builtbyusingsophisticated"ApplicationWizards" Correctansweris(b)Seesection1.2.1ofthecoursenotes. 4.WhichofthefollowingmustbetrueifaprogramisstoppedataspecificlinewithintheVisualC++debugger? Thereisatleastonebreakpointenabled. Thereisabreakpointenabledonthatline. Thereisabreakpointenabledonthelineprecedingthatline. (a)IandIIIonly(b)IandIIonly(c)none(d)Ionly Correctansweris(c) 5.Whatdoesthefollowingprogramprint? voidcallee(int*count){ (*count)++; } intmain(intargc,char*argv[]){ intcount=4; callee(count); printf("%d",count); return0; } (a)8(b)nothing: itwillnotcompilesuccessfully (c)4(d)5 Correctansweris(b)Seesection1.4.1ofthecoursenotes. 6.Considerthefollowingprogram. inti; int*jp=&i; intmain(inti,char*argv[]){ printf("%d%d\n",(int)&i,(int)jp);//随机值i,与局部值i不一样 } Whichofthefollowingdescribeswhatitprints? (a)twovalues,one4greaterthantheother (b)twoverydifferentintegers (c)nothing: itwillnotcompilebecauseitisambiguous (d)twointegersthatareexactlythesame Correctansweris(b) -------------------------------------------------------------------------------- xxx7.Activationrecordsareorganizedinstacksbecause (a)stacksallowactivationrecordstobepushedandpoppedinanyorder. (b)functionsneedtoaccessallthevariablesofthefunctionsthatcallthem. (c)theyareseldomneededduringprogramexecution. (d)stacksaresimpleenoughforthehardwaretomanage. Correctansweris(d) 8.Whatdoesthefollowingprogramprint? intcallee(int*count){ count++; return*count; } intmain(intargc,char*argv[]){ intcount=4; intretval; retval=callee(&count); printf("%d",retval); return0; }(a)5(b)cannotbedeterminedfromtheinformationgiven. (c)4(d)8 Correctansweris(b) 9.ConsiderthefollowingsegmentofCsourcecode. inta=8; intb=*&a; Whatisthevalueofvariablebattheendofexecutionofthesegment? (a)(int)&b(b)&a (c)(int)&a(d)a Correctansweris(d) xxx10.ConsiderthefollowingsegmentofaCprogram. inti=99; inta[100]; i=a[i+1]; Whichofthefollowingistrueofthesegment? (a)Whenexecuted,theprogramwillbeprematurelyterminatedbytheoperatingsystembecauseofanillegalmemoryaccess. (b)iwillhavethevalueofthelastelementofthearrayaattheendofanyexecutionofthesegment. (c)Executionwillfailbecauseahasthewrongsize. (d)iwillhavethevalue99attheendofanyexecutionofthesegment. Correctansweris(d) xxx11.Abranchinstruction (a)setstheprogramcountertooneoftwopossiblevalues (b)setstheprogramcountertooneofmanypossiblevalues (c)increasestheprogramcounterbyafixedamount (d)unconditionallysetstheprogramcountertoitsoperand Correctansweris(a) xxx12.Whichofthefollowingisagoodreason(aregoodreasons)toequiptheCPUwithsmallamountsoffastmemory? //这里指CPU里的寄存器 Tomakethedesignofthecompilersimpler TomakesomeCPUinstructionssmaller TomakesomeCPUinstructionsfaster (a)IIIonly (b)IIandIIIonly (c)I,II,andIII (d)IIonly Correctansweris(b) 13.Supposethat,usingatoolsuchasthememorywindowofVisualC++,wefoundthatacertainsetofcontiguousmemorylocationscontainedtheinteger0xC605CD623A8365000000.Whatcouldthesememorylocationshold? theinteger0xC605CD623A8365000000 astring aCPUinstruction (a)I,II,andIII (b)IIIonly (c)IandIIonly (d)IonlyCorrectansweris(a) 14.WhichofthefollowingcomputationsmaybeperformedbyexactlyoneCPUinstruction? a=5;//直接用MOV语句就可以了 a=b+c*5; for(i=0;i<10;i+=a[i++]); (a)IandIIonly (b)Ionly (c)I,II,andIII (d)IIonlyCorrectansweris(b) 1.WhichofthefollowingVisualC++objectsarecontainedwithina"Project"? Files VisualC++Solutions Flowcharts (a)IIandIIIonly (b)IIonly (c)I,IIandIII (d)Ionly Correctansweris(d) xxx2.Whichofthefollowingdoesadebuggerdo? //debug状态程序语法没错,语义有错,要程序员自己调出来 Analyzethesourcecodetofindprogrammingerrors. Decodemachinecodegeneratedbyacompiler. Stopexecutionofaprogram. (a)IIandIIIonly (b)IandIIIonly (c)I,II,andIII. (d)IIIonlyCorrectansweris(a) -------------------------------------------------------------------------------- 4.WithinVisualC++,whichofthefollowingwillrevealthevalueofavariablewhentheprogramisstoppedatabreakpoint? Placingthemousepointeroverthevariablenameinthesourcefilewindow. Insertingaprintf()intheprogram. Typingthevariablenameonthe"Watch"window. (a)IandIIIonly (b)IIIonly (c)IIandIIIonly (d)I,II,andIII Correctansweris(a) -------------------------------------------------------------------------------- xxx6.Atwhichofthefollowingtimesisanactivationrecordcreated? Whenaprogramstartsexecuting. Everytimeafunctionisinvoked. Whenavariableisdeclared. (a)IIandIIIonly (b)IIIonly (c)IandIIonly (d)IIonly Correctansweris(c) ----------------------------------------------------------------------------- xxx8.Considertheprogramgivenbelow. #include intcallee(void){ intcount=5; printf("%d",(int)&count); returncount; } intmain(intargc,char*argv[]){ intcount=4; count=callee(); printf("%d",(int)&count); return0; } Whichofthefollowingdescribestheoutputoftheprogram? (a)5and4areprinted,inthatorderonthesameline. (b)Oneintegerisprintedtwice,anditsvaluecannotbedeterminedfromtheinformationgiven. (c)5isprintedtwiceonthesameline. (d)Twodifferentintegersareprinted,andthevalueofneithercanbedeterminedfromtheinformationgiven. Correctansweris(d) -------------------------------------------------------------------------------- 9.Inacomputerinwhichbothaddressesandintegersare32bitswide,howmanybytesofmemorywillthecompilerallocateasaresultofthefollowingpointerdeclaration? int*pointer; (a)0 (b)8 (c)4 (d)64 Correctansweris(c) -------------------------------------------------------------------------------- xxx11.Theprogramcountercontains (a)thenumberofCPUinstructionsaprogramhasexecutedsofar (b)theamountofmemoryaprogramiscurrentlyusing (c)thenumberoftimesaprogramhasbeenexecuted (d)theaddressoftheCPUinstructionthatisabouttobeexecuted Correctansweris(d) -------------------------------------------------------------------------------- xxx12.Ajumpinstruction (a)unconditionallysetstheprogramcountertoitsoperand (b)increasestheprogramcounter (c)changesapointertopointtothenextelementofanarray (d)changestheprogramcounteronlyifitsoperandisequaltozero Correctansweris(a) -------------------------------------------------------------------------------- xxx13.Wewantthevariablefactorialfunctoholdtheaddressofthefirstinstructionofthefollowingfunction: intfactorial(intn){ if(n==1)returnn; returnn*factorial(n-1); } Howwouldwedeclarethevariable? (a)int(*factorialfunc)(int); (b)wecan't: Ccannotextracttheaddressesofinstructions. (c)int(int)*factorialfunc (d)factorial()*factorialfunc; Correctansweris(a) -------------------------------------------------------------------------------- xxx2.Whichofthefollowingisabletodescribeacomputationatthehighestlevelofabstraction? (a)C++code (b)Ccode (c)logicGates (d)machinecode Correctansweris(a) -------------------------------------------------------------------------------- 4.WhendebuggingusingVisualC++,whichofthefollowingarepossiblethroughtheWatchwindow? Theprogram'sexecutioncanbestopped.//不能通过watch窗口将程序暂停 ThevalueofanarbitraryCexpressioncanbecalculated. Thevalueofaprogramvariablecanbeset. (a)IIIonly (b)IIonly (c)IIandIIIonly (d)I,II,andIII.Correctanswer
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ssd6 选择题 答案 重复