Whichofthefollowingis（are）trueregardingexecutionofthesegment?
Theinputstatementwillalwaystakethesameamountoftimetoexecute.
Theoutputstatementwillalwaysbeexecutedimmediatelyaftertheinputstatement.
Ifxandyarebothpositive,anintegergreaterthanbothwillbeprinted.
（a）IIonly（b）none（c）IandIIonly（d）IIandIIIonly
Correctansweris（b）Seesection1.1.1ofthecoursenotes.
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2.Integratedprogrammingenvironmentsmakeitdifficulttomixandmatchtoolsfromdifferentsources.Thisis
（a）bad,becausenosinglevendorislikelytobethesourceofallthebesttools
（b）good,becauseitensurescompilationisnotdoneincrementallybyaccident
（c）bad,becauseallthetoolswillthenhavethesameuserinterface
（d）good,becausetoolsfromdifferentsourcescannotbemadetointeractwitheachother
Correctansweris（a）Seesection1.1.4ofthecoursenotes.
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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）
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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）
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4.WithinVisualC++,whichofthefollowingwillrevealthevalueofavariablewhentheprogramisstoppedatabreakpoint?
Placingthemousepointeroverthevariablenameinthesourcefilewindow.
Insertingaprintf（）intheprogram.
Typingthevariablenameonthe"Watch"window.
（a）IandIIIonly
（b）IIIonly
（c）IIandIIIonly
（d）I,II,andIII
Correctansweris（a）
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xxx6.Atwhichofthefollowingtimesisanactivationrecordcreated?
Whenaprogramstartsexecuting.
Everytimeafunctionisinvoked.
Whenavariableisdeclared.
（a）IIandIIIonly
（b）IIIonly
（c）IandIIonly
（d）IIonly
Correctansweris（c）
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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）
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9.Inacomputerinwhichbothaddressesandintegersare32bitswide,howmanybytesofmemorywillthecompilerallocateasaresultofthefollowingpointerdeclaration?
int*pointer;
（a）0
（b）8
（c）4
（d）64
Correctansweris（c）
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xxx11.Theprogramcountercontains
（a）thenumberofCPUinstructionsaprogramhasexecutedsofar
（b）theamountofmemoryaprogramiscurrentlyusing
（c）thenumberoftimesaprogramhasbeenexecuted
（d）theaddressoftheCPUinstructionthatisabouttobeexecuted
Correctansweris（d）
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xxx12.Ajumpinstruction
（a）unconditionallysetstheprogramcountertoitsoperand
（b）increasestheprogramcounter
（c）changesapointertopointtothenextelementofanarray
（d）changestheprogramcounteronlyifitsoperandisequaltozero
Correctansweris（a）
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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）
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xxx2.Whichofthefollowingisabletodescribeacomputationatthehighestlevelofabstraction?
（a）C++code
（b）Ccode
（c）logicGates
（d）machinecode
Correctansweris（a）
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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
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