雨课堂学堂在线学堂云《Fundamentals of C Programming（西北工业）》单元测试考核答案

第1题WhichofthefollowingisnotthestandardofClanguage?

AK&RCBC89/C90,C99CISO/IEC9899:2011DNativeC第2题WhencompileaCprogram,thecommentswill

.AbecompiledandappearintheobjectcodeBbecompiled,butnotappearintheobjectcodeCnotbecompiledandnotappearintheobjectcodeDnotbecompiled,butappearintheobjectcode第3题AfilewrittenbyClanguage

.Acanbeexecutedimmediately.Bisasourceprogram.CcanbeexecutedaftercompilationDcanbeexecutedaftercompilationandinterpretation.

第4题WhichofthefollowinglanguagescanberecognizedbyCPUdirectly?AnaturelanguageBadvancedlanguageCmachinelanguageDassemblylanguage第5题ManyprogramminglanguagesborrowheavilyformClanguage,includingC++,Java,C#andPerl.第6题BywritingCcompilersforothercomputers,Cprogramcanberunindifferentplatforms.第7题OneofC’sadvantagesisefficiency.BecauseCwasintendedforapplicationswhereassemblylanguagehadtraditionallybeenused,itwascrucialthatCprogramscouldrunquicklyandinlimitedamountsofmemory.

第8题C’sweaknessesarisefromthesamesourceasmanyofitsstrengths:C’sclosenesstothemachine.第1题WhichofthefollowingisalegalCidentifier?()A1stuNPUBStu@NPUCstu-NPUD_stu_NPU第2题Whichofthefollowingprogramisright?()A#includeintmain();{/*programming*/printf("programming!\n");return0;}B#includeintmain(){/*programming*/printf("programming!\n");return0;}Cincludevoidmain(){/*programming*/printf("programming!\n");return0;}D#includeintmian(){/*programming*/printf("programming!\n");return0;}第3题Whichofthefollowingstatementiswrong?()AKeywordscanbeusedasidentifiersinClanguage.BIdentifiersinClanguagemustbeginwithaletterorunderscore.CCiscase-sensitive.DCplacesnolimitonthemaximumlengthofanidentifier.第4题TheextendedASCIIcharactersetusesonebytetorepresentcharacter,thereforethenumberofcharactersthattheextendedASCIIcharactercanrepresentis().()A1024B256C128D80第5题WhichofthefollowingisnotaconstantinClanguage?()A'AB'B012C"a"D'\n'第6题WhichofthefollowingisnotafloatconstantinClanguage?()A-2.38B.23C1.2e-2De-2第7题WhichofthefollowingisnotkeywordinClanguage?()AdoBintCvoidDmain第8题Thethreeidentifiers,weight,WeightandWEIGHT,areequalinClanguage.()Quiz3Operator&Expression第1题InClanguage,whichofthefollowingoperatorrequiresitsoperandsmustbeoftypeint?()A/B*C%D=第2题Ofwhichoperationtheprecedenceishigherthanothers’?()A()B%C++D,第3题Supposeintk=7,x=12;ofwhichexpressionthevalueis3?()Ax%=(k%=5)Bx%=(k-k%5)Cx%=k-k%5D(x%=k)-(k%=5)第4题Thevalueoftheexpression3.6-5/2+1.2+5%2is____.A4.3B4.8C3.3D3.8第5题Givenastatementf=(3.0,4.0,5.0),(2.0,1.0,0.0);,whichofthefollowingconclusionisright?()AThisstatementhassyntaxerrorBThevalueoffis5.0.CThevalueoffis0.0.DThevalueoffis2.0.第6题Supposeallvariablesinthefollowingexpressionshavebeendeclaredandinitialized,whichofthefollowingisnotalegalexpressioninClanguage?()Aa:=b+1Ba=(2,b=c+2)C(int)18.5%3Da=b+=c+b第7题Ifanexpressionisthesumoffourdataofdifferenttypes,includingint,long,doubleandchar,theexpression'stypeis____.AintBlongCdoubleDchar第8题Theexpressions++iandi++areexactlythesameas(i+=1).Quiz4FormattedInputandOutput第1题Ifcisavariableoftypechar,whichoneofthefollowingstatementsisillegal?Ai+=c;/*ihastypeint*/Bc=2*c–1;Cputchar(c);Dprintf(c);第2题Supposethatwecallscanfasfollows:scanf(“%d%f%d”,&i,&x,&j);Iftheuserenters:10.893↙

Whatwillbethevaluesofi,x,andjafterthecall?(Assumethatiandjareintvariablesandxisafloatvariable.↙isusedtorepresentEnterkey)

A100.89B1093C1193D10.893第3题Supposethatwecallscanf

asfollows:scanf(“%f%d%f”,&x,&i,&y);Iftheuserenters:12.345.6789What

willbethevaluesofx,i,andyafterthecall?(Assumethatxandyarefloat

variablesandi

isanint

variable.

↙isusedtorepresentEnterkey)A12.345789B12.345.6789C1245789D12.3450.6第4题Whichoneofthefollowingiscorrect?ATheoutputitemmustbegivenwhencallingfunctionprintf.BTheheaderfilestdio.hmustbeincludedbeforecallingfunctionputchar.CInClanguage,integerscanbeoutputinvariousforms,e.g.decimal,binary,octalandhexadecimal.DWhencallingfunctiongetchar

toreadinacharacter,wecaninputitscorrespondingASCIIcode.第5题Assumingthefollowingstatements:charc1='1',c2='2';c1=getchar();c2=getchar();putchar(c1);putchar(c2);Ifinputa└┘↙

whenrunthecode,↙isusedtorepresentEnterkey,└┘

isusedtorepresentspace,whichoneofthefollowingstatementsiscorrect?AVariable

c1isassignedthecharacter

a,andc2

isassignedthe

spacecharacter.BTheprogramwillwaitforthesecondcharacterinputbyuser.CVariable

c1isassignedthecharacter

a,andc2

remainsthecharacter2.DVariable

c1isassignedthecharacter

a,andc2

remainsuncertainvalue.第6题Giventhefollowingdeclarationsandscanf

functioncallstatements,tomakethevalueofa1,a2,c1,c2

tobe10,20,A

andB

respectively.Whichoneofthefollowinginputsiscorrect?↙isusedtorepresentEnterkeyand└┘

isusedtorepresenta1,a2;charc1,c2;scanf("%d%d",&a1,&a2);scanf("%c%c",&c1,&c2);A1020AB↙B10└┘20↙AB↙C10└┘20└┘AB↙D10└┘20AB↙第7题Assuming

thestatementscanf("a=%d,b=%d,c=%d",&a,&b,&c);

Tomakethevaluesofa,b,andctobe1,3,2respectively,whichofthefollowinginputiscorrect?↙isusedtorepresentEnterkeyand└┘isusedtorepresentspace.A132↙B1,3,2↙Ca=1└┘b=3└┘c=2↙Da=1,b=3,c=2↙第8题Ifthevariablex

isoftypedouble,whichoneofthefollowingstatementsisright?Ascanf("%f",x);Bscanf("%f",&x);Cscanf("%lf",&x);Dscanf("%5.1f",&x);第9题Whatistheoutputofthefollowingcode?└┘isusedtorepresentspace.floatx=-1023.012;printf("%8.3f,",x);printf("%10.3f",x);A1023.012,-1023.012B–1023.012,-1023.012C1023.012,└┘-1023.012D–1023.012,└┘-1023.012第10题Whatistheoutputofthefollowingcode?intx=13,y=5;printf("%d",x%=(y/=2));A3B2C1D0第11题Ifwedeclaredinta=1234;,whatistheresultwhenexecutingthestatementprintf("%2d",a);?A12B34C1234DError第12题Whatistheoutputofthefollowingcode?inta;charc=10;floatf=100.0;doublex;a=f/=c*=(x=6.5);printf("%d%d%3.1f%3.1f",a,c,f,x);A16516.5B1651.56.5C1651.06.5D2651.56.5第13题Executethefollowingstatements,ifinput12345678↙，whatistheoutput?inta,b;scanf("%2d%*2d%3d",&a,&b);printf("%d",a+b);A46B579C5690DError第14题Ccompilersare

requiredtocheckthatthenumberofconversionspecificationsinaformatstringmatchesthenumberofoutputitems.第15题Iftheformatstringis“%d\n”,scanf

willskipwhitespace,readaninteger,andthen

skiptothenextnon-white-spacecharacter.Soaformatstringlikethiscancauseaninteractiveprogramto“hang”

untiltheuserentersanonblankcharacter.Quiz5SelectionStructure第1题Aftertheexecution

ofthefollowingstatements:inta=1,b=2,c=3,d=4,m=2,n=2,

cond;

cond=(m=a>b)&&(n=c>d);,whichoneofthefollowingvalueisequaltothevalueofn?A1B2C3D4第2题Supposei

isavariable

oftypeint,anditsvalueis10,whichofthefollowingisthevalueofexpression30-i<=i<=9

?A0B1C9D20第3题Aftertheexecution

ofthefollowingstatements:

inta=0,b=0,m=0,n=0;

(m=a==b)||(n=b==a);,thevalues

ofmandn

are

and

respectively?A00B01C10D11第4题Whichofthefollowing

isequal

totheexpression

!x

?Ax==1Bx==0Cx!=1Dx!=0第5题Suppose

intx=3,y=4,z=5;,whichofthefollowingisthevalueoftheexpression!(x+y)+z-1&&y+z/2

?A6B2C1D0第6题WhichofthefollowingisnotalegalexpressioninClanguage?A0<=x<100Bi=j==0C(char)(x<100)Dx+1=x+1第7题Theexpressioninif(expression)

canbe

.Alogical

expressionBrelationalexpressionCarithmeticexpressionDanyoftheabove第8题When

executethefollowingprogram:#include<stdio.h>intmain(){

intx,y;

scanf("%d%d",&x,&y);

if(x>y)x=y;y=x;

elsex++;y++;

printf("%d,%d",x,y);

return0;}Whichoneofthefollowingiscorrect?ASyntaxerrorwhilecompilingBIf

input3and4,itoutputs4and5CIf

input4and3,itoutputs3and4DIf

input4and3,itoutputs4and5第9题InClanguage,theruleonembeddedifstatementis

that

else

isalwayspairedwith(

).AthepreviousnearestunpairedifBthefirstifCif

withthesameindentDthemostfrontif第10题Which

one

iscorrectwhen

execute

thefollowingcode?intx=0,y=0,z=0;if(x=y+z)printf("***");elseprintf("###");ASyntaxerrorwhilecompilingBItoutputs***CErrorwhilelinkingDItoutputs###第11题Ifa=1,b=3,c=5,d=4，thevalue

of

xis

when

executethefollowingprogram.if(a<b)

if(c<d)x=1;

else

if(a<c)if(b<d)x=2;elsex=3;

elsex=6;elsex=7;A1B2C3D4第12题Whichoneofthefollowingisequaltothestatement

y=(x>0?1:x<0?-1:0);

.Ay=0;if(x>=0)if(x>0)y=1;elsey=-1;Bif(x)if(x>0)y=1;elseif(x<0)y=-1;elsey=0;Cy=-1;if(x)if(x>0)y=1;elseif(x==0)y=0;

elsey=-1;Dif(x>0)y=1;elseif(x<0)y=-1;elsey=0;第13题Whatistheoutputofthefollowingprogram?#include<stdio.h>intmain(){

intx=1,y=0,a=0,b=0;

switch(x){

case1:switch(y){case0:a++;break;case1:b++;break;}

case2:a++;b++;break;

case3:a++;b++;}

printf("a=%d,b=%d",a,b);

return0;}Aa=1,b=0Ba=2,b=1Ca=1,b=1Da=2,b=2第14题Ifinti=10;thevalue

of

iwillbe

afterexecutingthefollowingcode.switch(i){

case

9:i+=1;case10:i+=1;case11:i+=1;default:i+=1;}A10B11C12D13第15题Giventhedeclaration:floatw;inta,

b;

,whichoneofthefollowingisa

legalswitch

statement?Aswitch(w){case1.0:printf("*\n");case2.0:printf("**\n");}Bswitch(a);{case1:printf("*\n");case2:printf("**\n");}Cswitch(b){case1:printf("*\n");

default:printf("\n");case1+2:printf("**\n");}Dswitch(a+b);{case1:printf("*\n");case2:printf("**\n");default:printf("\n");}第16题

Ifinti=1;thevalueofi

willbe

afterexecutingthefollowingcode.switch(i){

case

'1':i+=1;

case

'2':i+=1;

case

'3':i+=1;

default

:i+=1;}A2B3C4D5第17题Aftertheexecutionofthefollowingstatements:inti=5,j=4,k=6;floatf;f=(i<j&&j<k)?i:(j<k)?j:k;,whichoneofthefollowingvalueisequaltothevalueoff?A4.0B5.0C6.0D7.0第18题Aftertheexecutionofthefollowingstatements:intm1=5,m2=3;m1>m2?(m1=1):(m2=-1);,thevaluesofm1andm2

are

respectively?A1and3B1and-1C5and-1D5and3第19题switch

statementscanbetotallyreplacedby

ifstatementsatanytime.第20题Theexpressioninacaselabel

ofaswitchstatementmustbeconstantexpression.第21题Thestatement

ifandswitch

canbeembedded.第22题Theconditionalexpressionandif

statementcanbetotallyreplacedbyeachother.

第23题Duplicatecaselabelsaren’tallowed

inswitch

statement.第24题Inswitch

statement,severalcase

canexecutethesameprogramsegment.第25题Thecontrollingexpression

inswitch

statementcanbeanexpressionofanytype.第26题Thecase

branchinswitch

statementcanbeacompound

statementormultiplystatement

sequence.第27题Withoutbreak

(orsomeotherjumpstatement)attheendofacase,controlwillflowintothenextcase.

Quiz6LoopStructure第1题Whatistheoutputofthefollowingprogram?#include<stdio.h>intmain(){intx=0,y=5,z=3;while(z-->0&&++x<5)

y=y-1;printf("%d,%d,%d",x,y,z);

return0;}A3,2,0B3,2,-1C4,3,-1D5,-2,-5第2题Whichoneofthefollowingcontainsaninfiniteloop?A

for(i=1;;){if(i++%2==0)continue;if(i++%3==0)break;}B

for(i=1;;)if(++i<10)continue;Ci=32767;do{if(i<0)break;}while(++i);Di=1;while(i--);第3题Thefollowingcode

.

x=-1;do{

x=x*x;}while(!x);AisaninfiniteloopBloopsfor2timesCloopsfor1timeDhassyntaxerror第4题Whichoneofthefollowingstatementsiscorrect?Adostatementcannotbereplacedbytheotheriterationstatements.Bdostatementcanonlybeterminatedbybreakstatement.Cdostatementwillbeterminatedwhenitscontrollingexpressionisnon-zero.Ddostatementwillbeterminatedwhenitscontrollingexpressioniszero第5题Assumethefollowingcode:intn=0,p;do{

scanf("%d",&p);

n++;}

while(p!=12345&&n<3);Apisnotequalto12345andnislessthan3Bpisequalto12345andnisnotlessthan3Cpisnotequalto12345ornislessthan3Dpisequalto12345ornisnotlessthan3第6题Giventhefollowingforstatement:inti,k;for(i=0,k=-1;k=1;i++,k++)printf("***");Whichoneofthefollowingconclusionsiscorrect?ATheaboveforstatementcontainsillegalexpression.BTheaboveforstatementisaninfiniteloop.CTheaboveforstatementloopsfor1time.DTheaboveforstatementneverloops.第7题Thelooptimesofthefollowingforstatementare

.for(i=2;i==0;)printf("%d",i--);AinfiniteB0C1D2第8题Whatistheoutputofthefollowingprogram?#include<stdio.h>intmain(){inti,sum;for(i=1;i<6;i++)sum+=i;printf("%d",sum);

return0;}AunpredictableB0C14D15第9题Assumes,a,b,caredeclaredasintegers,anda,chavebeenassignedvalues(c>0),s=a;for(b=1;b<=c;b++)s=s+1;Whichoneofthefollowingisequaltotheabovecode?As=a+b;Bs=a+c;Cs=s+c;Ds=b+c;第10题Whatistheoutputofthefollowingprogram?#include<stdio.h>intmain(){inti=0,s=0;for(;;){

if(i==3||i==5)continue;

if(i==6)break;

i++;

s+=i;};printf("%d",s);

return0;}A10B13C21DItcontainsaninfiniteloopandwillnotoutputanything.第11题Ifthevariablesiandphavebeendeclaredandinitializedcorrectly,whichoneofthefollowingcannotcalculate5!?Afor(i=1,p=1;i<=5;i++)p*=i;Bfor(i=1;i<=5;i++){p=1;p*=i;}Ci=1;p=1;while(i<=5){p*=i;i++;}Di=1;p=1;do{p*=i;i++;}while(i<=5);第12题Inthefollowingprograms,whichonehasthedifferentoutputwiththeothers’?Ak=1while(1){s+=k;k=k+1;if(k>100)break;}printf("%d",s);Bk=1;Repeat:s+=k;if(++k<=100)

gotoRepeatprintf("%d",s);Cintk,s=0;for(k=1;k<=100;s+=++k);printf("%d",s);Dk=1;do{s+=k;}while(++k<=100);printf("%d",s);第13题Whatistheoutputofthefollowingprogram?#include<stdio.h>intmain(){intk=0,m=0,i,j;for(i=0;i<2;i++){

for(j=0;j<3;j++)k++;

k-=j;}m=i+j;printf("k=%d,m=%d",k,m);

return0;}Ak=0,m=3Bk=0,m=5Ck=1,m=3Dk=1,m=5第14题Whichoneofthefollowingisnotcorrect?AThestatementsinClanguage,exceptcompoundstatements,mustbeendedwithsemicolons.BAnemptystatementdoesnotaffecttheprograminanylocation.CCompoundstatementsareregardedasonesinglestatementinsyntax.DAnassignmentstatementcanbemadebyaddingasemicolonattheendoftheassignmentexpression.第15题Assumethefollowingprogramfragment:intk=2;while(k=0){

printf("%d",k);

k--;}Whichoneofthefollowingiscorrect?Awhilestatementloopsfor10times.BTheloopisinfinite.CTheloopneverruns.DThelooprunsforonlyonetime.第16题whileindostatementcanbeomittedsometimes.第17题Anyofthe3expressionsinforloopcanbeomitted,andsoiswhileanddostatement’scontrollingexpression.第18题Themostpowerfuliterationstatementisforstatement.第19题Theloopbodyintheforstatementwillbeexecutedatleastonce.第20题breakcanbeusedinswitchstatementsandloops(while,do,andfor),whereascontinueislimitedtoloops.Quiz7Preprocessing第1题Whichoneofthefollowingstatementsiswrong?APreprocessingdirectivemustbeginwith#.BAlinewhichbeginswith#inCprogramisapreprocessingdirective.CThepreprocessingdirectivesinCprogramareprocessedduringexecuting.DPreprocessingdirectivescanappearinanylineofaCprogram.第2题Whichoneofthefollowingstatementsaboutmacrosubstituteiswrong?AMacrosubstitutedoesnotoccupytheexecutingtime.BMacronamedoesnothavedatatypeCMacrosubstitutionisjuststringsubstitution.DMacrosmustbenamedwithcapitalletters第3题Assumingwehave#defineL(x)2*3.14*x，thusL(x)is

.AfunctionnameBfunctioninvokingCmacrowithnoargumentsDmacrowithargument第4题Assumingwehave#defineP(x)x/x,whatistheoutputafterexecutingprintf("%d",P(4+6));?A1B8.5C11D11.5第5题Assumingthemacrodefinition#defineMOD(x,y)x%y,whatistheresultofthefollowingcode?intz,a=15;floatb=100;z=MOD(b,a);printf("%d",z++);A11B10C6DSyntaxerror第6题Whichoneofthefollowingmacroforsquarecalculationwillnotcauseambiguityinanycase?A#definePOWER(x)

x*xB#definePOWER(x)

(x)*(x)C#definePOWER(x)

(x*x)D#definePOWER(x)

((x)*(x))第7题Givenamacrodefinitionasfollows:#defineN3#defineY(n)((N+1)*n)whichoneofthefollowingisthevalueoftheexpression2*(N+Y(5+1))?

AerrorB42C48D54第8题Givenamacrodefinition#definep(x,y,z)x=y*z;thesubstitutionp(a,x+5,y-3.1)willbe

Aa=x+5*y-3.1;Ba=(x+5)*(y-3.1);Ca=x+5*y-3.1Da=(x+5)*(y-3.1)第9题Inthefileincludingpreprocessingdirectives,whenthefilenameisenclosedbydoublequotesafter#include,thefilewillbesearched.AinthestandardsearchingdirectoryofsystemsettingBinthesourcefiledirectoryfirst,thenthestandarddirectorysearchingofsystemsettingConlyinthesourcefiledirectoryDonlyinthecurrentdirectory第10题Inthefileincludingpreprocessingdirectives,whenthefilenameisenclosedbyanglebracketafter#include,thefilewillbesearched.AinthestandardsearchingdirectoryofsystemsettingBinthesourcefiledirectoryfirst,thenthestandarddirectorysearchingofsystemsettingConlyinthesourcefiledirectoryDonlyinthecurrentdirectory第11题Macrosubstitutiondoesnothavetypeproblem,anditsargumentsareofnotypeeither.第12题InClanguagestandardlibraryheaderfiles,manysystemfunctionprototypearedeclared.Therefore,aslongasthesefunctionsareusedintheprogram,theseheaderfilesshouldbeincluded,forcheckingthefunctioncallingbycompilingsystem.第13题#includedirectivecanincludeaCsourcefilewithfunctiondefinition.第14题Theheaderfilesincludedby#includemusthavethesuffix.h.Quiz8Array第1题Whenindexanarrayelement,whichoneofthefollowingstatementsiswrong?AThearraysubscriptcanbeintegerconstantBThearraysubscriptcanbeintegerexpressionCThearraysubscriptcanbeintegerconstantorintegerexpressionDThearraysubscriptcanbeexpressionofanytypes第2题WhichoneofthefollowingdeclarationscandefineaonedimensionalarrayacorrectlyinC89?Ainta(10);Bintn=10,a[n];Cintn;scanf("%d",&n);inta[n];D#defineSIZE10inta[SIZE];第3题Assumeadeclarationinta[10];,whichoneofthefollowingcanreferencetheelementin

a

correctly?Aa[10]Ba[3]Ca(5)Da[-10]第4题Whichoneofthefollowingstatementsiswrong?AInC,thearrayscannotbeassignedvaluesintegrallyinanassignmentstatement.BArraynamerepresentsthestartingaddressofthisarrayinthememory,whichcannotbechanged.CIftheindexofanarrayelementexceedstherangepre-defined,systemwillgiveanerrormessage“arrayindexoutofbounds”,whileexecuting.DThelengthofanarraycanbedeterminedbyinitializer.第5题Assumethedeclaration

inta[3][4];whichoneofthefollowingcanindextheelementinacorrectly?Aa[2][4]Ba[3][3]Ca[0][0]Da[3][4]第6题Assumethedeclaration

inta[3][4]={0};whichoneofthefollowingstatementsiscorrect?AOnlytheelement

a[0][0]

isinitializedto0.BItisawrongstatement.CEachelementin

ais

initializedbutnotto0.DEachelementinaisinitializedto0.第7题Ifa2-Darrayahasmcolumns,theformulatoindextheelement

a[i][j]

is___.Ai*m+jBj*m+iCi*m+j-1Di*m+j+1第8题Whatistheoutputofthefollowingcode?intk,a[3][3]={1,2,3,4,5,6,7,8,9};for(k=0;k<3;k++)printf("%d",a[k][2-k]);A357B369C159D147第9题Whichoneofthefollowinginitializationiscorrectforthe2-Darraya?Ainta[3][3]={};Binta[2][2]={1,2,3,4,5,6};Cinta[3][3]={1,2,3,4,5,6};Dinta[2,3]={1,2,3,4,5,6};第10题Assumethedeclaration

int

b[]={1,2,[8]=3,4,5,[15]=1,6,7};thelengthofarray

b

is_____.A8B17C18DuncertainQuiz9Function第1题Whichoneofthefollowingstatementsaboutfunctionisright?AEveryfunctioncanbecalledbytheotherfunctions,includingmainfunction.BEveryfunctioncanbecompiledseparately.CEveryfunctioncanberunseparately.DAfunctioncanbedefinedinthefunctionbodyofanotherfunction.

第2题Whichoneofthefollowingstatementsisright?AFunctiondefinitionscanbenested,butfunctioncallscannotbenested.BFunctiondefinitionscannotbenested,butfunctioncallscanbenested.CBothfunctiondefinitionsandfunctioncallscannotbenested.DBothfunctiondefinitionsandfunctioncallscanbenested.第3题Whichoneofthefollowingfunctiondefinitionsisright?Adoublef(intx,inty)

{

z=x+y;

returnz;

}Bdoublef(intx,y){doublez=x+y;returnz;}Cdoublef(x,y){

intx,y;doublez;z=x+y;returnz;

}Ddoublef(intx,inty){

doublez;

z=x+y;

returnz;}第4题Ifcallafunction

intf(),whichdoesnotcontainany

return

statement,whichoneofthefollowingconclusionsisright?AThisfunctiondoesnotreturnanyvalue.BThisfunctionreturnsasystemdefaultvalue.CThisfunctionreturnsthevalue0.DThisfunctionreturnsanunpredictablevalue.第5题WhichoneofthefollowingdeterminesthereturntypeofafunctioninClanguage?ATheexpressiontypeinthereturnstatementBThecallingfunctionCCompilerDThereturntypespecifiedbyfunctiondefinition第6题Whichoneofthefollowingstatementsaboutfunctionreturntypeiswrong?AFunctionreturntypecanbeint.BFunctionreturntypecanbearray.CFunctionreturntypecanbechar.DFunctionreturntypecanbevoid.第7题Whichoneofthefollowingstatementsiswrong?AActualparametercanbeaconstant,avariableoranexpression.BFormalparametercanbeaconstant,avariableoranexpression.CFormalparametercanbeofanytype.DThedatatypesofformalparameterandactualparametercanbedifferent.第8题Whichoneofthefollowingisright?AAfunctioncallmustreturnavalue.BActualparameterandformalparametercanhavethesamename.CThedatapassedinfunctionscannotbeglobalvariables.DThecallingfunctionandthecalledfunctionmustbeinthesamefile.第9题Givenafunctiondefinitionasfollows:voidf(charch,floatx){......},whichoneofthefollowingfunctioncallstatementsisright?Af("abc",3.0);Bt=f('D',16.5);Cf('65',2.8);Df(32,32);第10题Assumeaprogramdefinesafunctionasfollows:doublef(doublea,doubleb){return(a+b);},butthedefinitioniswrittenaftercallingf.Therefore,fshouldbedeclaredbeforethecalling.Whichoneofthefollowingprototypesiswrong?Adoublef(doublea,B);Bdoublef(double,double);Cdoublef(doubleb,doubleA);Ddoublef(doublex,doubley);第11题Whichoneofthefollowingstatementsaboutfunctiondeclarationiswrong?AIfthedefinitionofafunctionprecedeitscalls,itsfunctiondeclarationisnotrequired.BAfunctionprototypedoesn’thavetospecifythenamesofthefunction’sparameters,aslongastheirtypesarepresent.CC99hasadoptedtherulethateitheradeclarationoradefinitionofafunctionmustbepresentpriortoanycallofthefunction.DFunctionprototypesofstandardCfunctionsarenotrequired.第12题Ifthearraynameisusedforanactualparameterinafunctioncalling,whichoneofthefollowingwillbedeliveredtothecorrespondingformalparameter?Athestartingaddressofthearray.Bthevalueofthe1stelementinthearray.CalltheelementvaluesinthearrayDthenumberoftheelementsinthearray.第13题Giventhefollowingcodeinthemainfunction,whichoneofthefollowingisanincorrectdeclarationoftheformalargumentinfunctionf?inta[3][4];f(a);Af(intarray[3][4])Bf(intarray[][4])Cf(intarray[3][])Df(intarray[4][3])第14题Readthefollowingprogram:intfun1(doublea){returna*=a;}intfun2(doublex,doubley){doublea=0,b=0;a=fun1(x);b=fun1(y);return(int)(a+b);}ifwisavariableoftypedouble,whatisthevalueofw,afterexecutingthestatementw=fun2(1.1,2.0);?A5.21B5C5.0D0.0第15题Bothfunctiondefinitionandfunctioncallcanbenested.第16题Afunctionmusthaveareturnvalue,otherwiseitcannotbedefinedasafunction.第17题Specifyingthatthereturntypeisvoidindicatesthatthefunctiondoesn’treturnavalue.Quiz10Pointers第1题Thepointerofavariableindicatesthe

ofthevariable.AvalueBaddressCnameDasymbol第2题Givenintk=2;int*ptr1,*ptr2;andbothptr1andptr2pointtothevariablek,whichoneofthefollowingassignmentsisnotcorrect?

Ak=*ptr1+*ptr2Bptr2=kCptr1=ptr2Dk=*ptr1*(*ptr2)第3题Givenint*p,m=5,n;whichoneofthefollowingstatementsisright?

Ap=&n;scanf("%d",&p);Bp=&n;scanf("%d",*p);Cscanf("%d",&n);

*p=n;Dp=&n;*p=m;第4题Givenint*p,a=4;andp=&a;inwhichoneofthefollowing,allitemsindicateaddresses?Aa,p,*&aB&*a,&a,*pC*&p,*p,&aD&a,&*p,p第5题Ifapointerppointstoavariablex,whichoneofthefollowingisequalto*&x?

AxBpC&xD&*p第6题Ifthepointerppointstoanintegervariablex,whichoneofthefollowingisequalto(*p)++?Ax++Bp++C*(p++)D&x++第7题Fortwopointervariablesofthesamebasetype,whichoneofthefollowingoperationscannotbedone?A<B=C+D-第8题Giventhefollowingfunctionandthevariabledeclarationinta=25;whichoneofthefollowingistheresultofthestatementprint_value(&a);?voidprint_value(int*x){printf("%d",++*x);}A23B24C25D26第9题Givenchars[10];whichoneofthefollowingisnottheaddressofs[1]?

As+1Bs++C&s[0]+1D&s[1]第10题Giveninta[5],*p=a;whichoneofthefollowingisacorrectreferencetoanelementinarraya?A*&a[5]Ba+2C*(p+5)D*(a+2)第11题Giveninta[5],*p=a;whichoneofthefollowingisacorrectreferencetotheaddressofanelementinarraya?

Ap+5B*a+1C&a+1D&a[0]第12题Givenintx[]={1,2,3,4,5,6,7,8,9,0},*p=x,k;andkislargerthanorequalto0andlessthan10,whichoneofthefollowingisawrongreferencetothearrayelementx[k]?

Ap+kB*(x+k)Cx[p-x+k]D*(&x[k])第13题Givenintx[6]={2,4,6,8,5,7},*p=x,i;whichoneofthefollowingcodecannotoutputthe6elementsinarrayxinorder?Afor(i=0;i<6;i++)printf("%2d",*(p++));Bfor(i=0;i<6;i++)printf("%2d",*(p+i));Cfor(i=0;i<6;i++)printf("%2d",*p++);Dfor(i=0;i<6;i++)printf("%2d",(*p)++);第14题Giveninta[2][3];whichoneofthefollowingisacorrectreferencetotheaddressoftheelementini-throwandj-thcolumnofarraya?A*(a[i]+j)B(a+i)C*(a+j)Da[i]+j第15题Giveninta=3,b,*p=&a；whichoneofthefollowingstatementsdoesn’tassignthevalue3tob?

Ab=*&a;Bb=*p;Cb=a;Db=*a;第16题Giveninta[4][5];whichoneofthefollowingreferencesisincorrect?

A*aB*(*(a+2)+3)C&a[2][3]D++a第17题Giveninta[2][3],(*p)[3];p=a;whichoneofthefollowingreferencestoanelementinthearrayaiscorrect?

A(p+1)[0]B*(*(p+2)+1)C*(p[1]+