C语言程序设计教程李含光郑关胜清华大学出版社习题答案习题答案

1、第1章习题参考答案单项选择题(1)AB2.填空题(2)C(3)D(4)C(5)（1）函数（2）主函数(main),scanf（）题参考容案1.单项选择题(1)C(2)B(3)C(4)C(5)C(6)C(7)D(8)C(9)D(10)C(11)D(12)B(13)B填空题126TOC o 1-5 h z6,4,210,63.000000双精度(double)9字母，数字，下划线13.70000011(ni/10)%10)*100+(nVIOO)*10十m%10010,9,11(x0&y0)|(x0&z0)|(y0|z0)doublex=0sqrt(fabs(a-b)/(3*(a+b)sqit(x

2、*x+y*y)/(a+b)第3章习题参考答案单项选择题Bdbelz)V4491(cdbcbbaDCB填空题用；表示结束y=xO?l:x=O9O:-ly%4=0&y%100!=0|y%400=0上面未配对defhult标号wlule,dowhile,fordowlule本次本层阅读程序，指出结果yesTOC o 1-5 h z*&ABother28702,083613,1,-1,3,1,-1a=12,y=121=6,k=41,-2程序填空(1)x：y,u：z(3)t=0,sgnun,(2)m=nm!=0,m=nV10编程题(1).#includemtmain()doublex、y;scanf(H

3、%lf&x);lf(X=1.0&x10)y=2*x-ll;elsey=3*x-ll;retuni0;.#includemtmain()doublexy乙min;scanf(H%lf%lf%lf&x,&y,&z);niin=y;elseniin=x;if(niinz)niin=z;pnntf(Hmin=%lfii,niin);letuni0;.#includemtmain()inty,m,d,flag,s=0,w,i;scanf(H%d%d%d,&y,&m，&d);flag=(v%4=0&y%100!=0|y%400=0);w=(y-1)*365十(y-1)/4-(y-l)/100+(v-1)/

4、400)%7;fbi(i=l;i2)s=s+l;s=(w十s)%7;if(s=O)piintf(Hfi期Elm”)；elsepdntf(”星期%dn,s);letiun0;.#includemtmain()floatpj;scanf(”f&p);if(p10&p20&p40&p60&p100)r=10*0.1十10*0.075十20*0.05+20*0.03+40*0.015+(p-100)*0.01;letuni0;.#includemtmain()charc;wlule(c=getchai()!-n!)lf(C=W&CV=N)c=c-32;putchai(c);letuni0;.#incl

5、udemtmain()intm,k=2;printf(”输入一个正整数:n”);scanf(H%d,&m);while(km)if(m%k=0)pnntf(n%4d,k);m=nVk;elsek+;piintf(H%4dn,m);letiun0;.#includemtmain()inta,n,s=0,p=0j;scanf(H%d%d”,&u,&a);fbi(i=l;i=n;i+)p=p*10+a;s=s+p;printf(”dn”,s);letuin0;.#includemtmain()inti,j,k;foi(i=l;i=9;i+)foi(j=0;j=9;j+)fbi(k=0;k=9;k+)

6、piiiitf(n%5dM00*i+10*j+k);letuin0;.#include#includemtmain()floata=-10,b=10,x,f1fl=(2*a-4)*a+3)*a)-6;f2=(2*b-4)*b+3)*b)-6;dox=(a+b)/2;f=(2*x-4)*x+3)*x)-6;if(f*fl=1e-6);priiitf(M%6.2fn,x);letuni0;#iiiclude#includemtmain()intn=2;doubleeps,t,s=0,x;scanf(H%lf%lf,&x,&eps);t=x;s=t;while(fabs(t)=eps)t=-t*(2

7、*n-3)*x*x/(2*n-2);s=s+t/(2*n);n+;piintf(”d,%lfn”,n,s);letuin0;.#includemtmain()unsignedlongs、t=O、p=l;scanf(M%u,&s);while(s!=0)if(s%10)%2!=0)t=t+(s%10)*p;p=p*10;s=s/10;pnntf(H%uirt);letuin0;第4章习题参考答案第4章习题参考答案1.单项选择题(1)D(2)DD(6)B(7)AD(11)B(12)D2.填空题(1)2（2）嵌套,递归（3）全局变量,局部变量，(4)auto,static,register,静态变量

8、，动态变量extern(3)D(4)B(5)(8)D(9)C(10)(13)A(14)B外部变量编译,运行阅读程序，指出结果TOC o 1-5 h z1555,4,3i=51=21=21=41=2求水仙花数-5*5*530010111212程序填空,z+yz-yfloatfini(float,float),x+y,x-y,z+yz-yx，x*x+ls=0,a=a+b编程题.#includeunsignedintfxin(unsignedmt);mtmain()unsignedmts;scanf(H%uu,&s);priiitf(n%un,fun(s);letuni0;unsignedintfx

9、in(unsignedmts)unsignedmtp=0;while(s!=0)p=p+s%10;s=s/10;letunip;.#include#includejeoy(p1BOU40leouq卩0卩乜20卩)门ptoa(2IX.UJ3%4J3%H)JJlTT.Td乂e*乙)/(p)口bs-q-)=x乙)/(p)口bs+q-)=【xjeoy(pieoj4oicofqjuou4ejeou)ijptoa：0ILTlgf(pWE)臼asp(0=Pln9sp(0P)J【甘q岩q=p伽gXZ討华迓二N書J珂Td(0=e)J【迤型J%J%H)jneosP，qcjuoypT0A!(JU0UnB0UnB0U

10、fclU0U)2JOineuTiur(ieoufcjEOjfcjEOjujEOj)yPTOA!(JEOJUJEOJWJUOJpT0A!(JU0UnB0UnB0UfclU0U)2J9pnpin#xl=-b/(2*a);x2=-b/(2*a);priiitf(n%.2f,%.2fn,xl,x2);voidf3(floata,floatb,floatc,floatd)floatxl,x2;xl=-b/(2*a);x2=sqrt(-d)/(2*a);pdntf(”.2fH*%.2fn”,x1,x2);pdntf(”.2f-i*%.2fn”,xl,x2);.#includedoublep(int,dou

11、ble);mtmain()intn;doublex;doscanf(n%du,&n);while(n0);scanf(H%lf&x);pnntf(H%lfiin,p(n.x);letiun0;doublep(intn.doublex)doublepn;if(n=0)pn=l；elseif(n=l)pn=x;elsepn=(2*n-l)*x*p(n-1,x)-(n-1)*p(n-2,x)/n;retiinipn;.#include#defiiieRATE0.053doublefim(float);voiddisplay(float.mt);mtmain()floatdep;intseason;s

12、canf(M%f%d,&dep,&season);display(dep.season);retiini0;doublefim(floatd)letuind*RATE;voiddisplay(floatd,ints)inti;pmitf(”季度利息余额n”);pnntf(niin);fbi(i=l;i=s;i-H-)pnntf(H%-4d%-.2f%.2fn”ihm(d),hm(d)引十d);pnntf(niin);.#includedoublefini(void);mtmain()letuni0;doublefini(void)doubles=0;intn=l;wliile(double)(

13、2*n-l)/(2*n)*(2*n)1e-4)s=s+(double)(2*n-l)/(2*n)*(2*n);n+;letunis;.#includemtfiin(mt);mtmain()liltw;scanf(”d”,&w);piiiitf(H%dn,fun(w);letuni0;mtfini(mtw)intn=l,p=l,m;m=w;wlule(m10)m=m/10;p=p*10;n+;letumw%p;第5章习题参考答案1、选择题：C(2)BC(3)B(4)B(5)A(6)D(7)D(8)B2、填空题0,9floatiealAnay100,charstiAiiay16,intintAii

14、ay1000(3)运算符sizeof6字节3、阅读程序，写出下面程序的运行结果aabbccddabcdaliAMa00101345Thisisthetitle.Name1isRosalindaName2isZekeThebiggestnamealpabeticallyisZekeBothnamesareRosalmdaZeke0256810036912150402568100369121504812162005101520177061218243007142128354、程序填空(1)aiU?=呦i,1(2)0,aianum,maxi=1,(3)lilta,mt叩，bi=ai,asizeof(

15、cli),if012345748182430364207142128354249amaxi=amini-999,auaycopy(a,b),bi+(4)5、编程题(1)#includemtmain()iiita34=0,2,9,7,5,136&27,11,1,3；inti,j,temp;for(i=0j=0;j4;j-H-)temp=a2-ij;a2-iU=aiUJ；aiU=temp;fbi(i=0;i3;i+)for(j=0;j4;j+)pdntf(”3d”,aij)；pnntf(ii);letmn0;(2)#includeintmam()staticmta66;intfbr(i=0;i6;

16、i+)t=i+l;fbr(j=0;ji+lj-H-)aiU=t-；foi(i=0;i6;i+)foi(j=0;j6;j+)pdntf(”3d”,aij)；retuin0;(3)#include#defiiieM3#defiiieN4#defiiieR5mtmain()staticmtaMN,bNR,cMR;inti,j,k;printf(HMatrixa:n);foi(i=0;iM;i+)foi(j=0;jN;j+)scanf(n%dn,);piintf(”Matrixb:ii*);foi(i=0;iN;i+)foi(j=0;jR;j卄)scanf(n%dn,);foi(i=0;ivM;i十十

17、)foi(j=0;jN;j+)foi(k=0;kR;k十十)cik+=aiU*bUk;foi(i=0;iM;i+)foi(j=0;jR;j卄)priiitf(%3dn,cij)；pnmf(二m=)j一etui一一p(4)IncludeAsrdlo.hv甘defineM511=malll(二sralcEtaMkin二hlaxnl.lnmHloo.maxl.mmlJelnp-fbAiH0二AM二+)scals=%d=Qa曰)；WO99画3Sfbl.(iH0二AM二+)宀1=maxAa三二maxHa三-maxin1=mmVa三二mmHa三jmmiHi;Tempnamlaxl；amaxinamlrnl

18、amlml丄emp;fbl(iH0二AM二丰)plll=f=%3d=a三)ietuiii0;(5)#include#defiiieM3#defiiieN4mtmain()staticmtaMN;intmax=丄siimcol=0,simuow=0;intijjnaxi.col;foi(i=0;iM;i+)sunuow=0;foi(j=0;jN;j+)scanf(”d”,);sunuow+=aij；if(maxO),f);scanf(H%du,&col);foi(i=0;ivM;i十十)sumcol+=aicol-l;pnntf(nTlie%dtlilowssumismax,max=%dnn,m

19、axi+l,max);pnntf(nTlie%dtlicolumnssum=%dncotsumcol);letuni0;(6)#include#defineM81mtmain()staticcharstrM;inti,count=0;charch;gets(str);fflush(stdm);清空输入缓冲区，以便读入字符数据piintf(HWhichchaiacterwillbefound?n);cli=getcliarO；fbi(i=0;isulen(str);i+)if(ch=stii)count+;pnntf(Thenumberofcharacteris%dii,ch,count);le

20、tuin0;(7)#include#include#defiiieN10同学人数#defiiieM5/课程数voidenter_scores(void);voidsoil_scores(mtscoieM,intaveiageN3);voiddisp_scores(mtscoreM);voidhistogiam(mtn,intscoieM);voidpimtchai(intn);staticmtscoieNM;staticmtaveiN3;第1列为均值，第2列原始顺序，第3列为均值逆序mtmam()intcourse;entei_scoiesO；pnntf(nii=OiingenalScoreS

21、tait=nu);disp_scoies(score);pnntf(nii=OnngenalScoreEnd=iin);pnntf(nii=SoitedScoreStait=n);sort_scoies(scoie,avei);pnntf(nii=SoitedScoreEnd=iin);piintffnWhichclasswillbestatisticed?nn);scanf(M%dH,&couise);histogram(couise,score);system(nPausen);retuin0;/*输入成绩*/voidentei_scoies()inti,j;foi(i=0;iN;i+)f

22、oi(j=0;jM;j-H-)scanf(n%d,&scoieij);averi0+=scoreij;foi(i=0;iN;i+)for(j=l;j3;j卄)aveiij=i；/*成绩排序.*/voidsoft_scores(uitscoieM,intaveiageN3)intij,t;inttemp,tempindex;foi(i=0;iN-1;i+)foi(j=0;jN-1-i;j+)if(averagej0averagej+l0)temp=averagej0;averagej0=averagej+l0;averagej+l0=temp;tempmdex=aveiagej2;average

23、j2=averagej+l2;averagej+l2=tempindex;pnntf(niiScore1Score2Scoie3Scoie4foi(1=0;iN;i+)t=averagei2;fbi(j=0;jM;j+)printf(”8d”,scoretj);/*输出成绩*/voiddisp_scores(iiitscoreM)inti,j;pnntf(niiScore1Score2Score3Scoie4Score5iin);Scoie5iiScore5iin);Scoie5iin);foi(j=0;jM;j+)pdntf(”8d”,scorei|j);pnntf(Hiin);voidpi

24、mtchai(intn)inti;for(i=0;1n;+i)putchaiX*1);voidhistogiam(uitcourse,intscoreM)inti.temp;intsegs5=0;intscN;foi(1=0;iN;i+)sci=scoreicourse;foi-(i=0;iN;i+)/*统计各分段人数*/temp=(mt)sci/10;segstemp6?0:temp-5卄；/*成绩/10,将成绩分段*/piintf(niiSegmentNumberiiH);fdr(i=0;i5;i+)/*输出直方图，每段的人数*/piintf(H%3d:%5d|”，(1+1)*10+50,

25、segsi);priiitchai(segsi);putcliaifXn1);piitchai(if);(8)#include#defiiieM81mtmain()staticcharstiM;inti,count=0;charch=0;gets(str);fbi(i=0;isulen(str);i+)if(chstii)ch=stri;fbi(i=0;isulen(str);i+)if(cli=Stil)count卄；pnntf(nmax=%c5count=%dirch,count);letiun0;7第6章习题参考答案1、选择题：(1)B(2)B(3)D(4)D(5)A(6)C(7)C(8

26、)A(9)B(10)D(11)C(12)B(13)C(14)D(15)A(16)2、填空题常量，变量指针TOC o 1-5 h z212,12a0,a33、阅读程序，写出下面程序的运行结果56abcdefgllgih9765315,92,4,5,7,6,0,11,9,7,3,stimg_a=Iamateachei.string_b=Youaieastudent.stnng_a=Iamateacher.stiing_b=Iamateacher.4、程序填空*p!=0,*p-O,j1strlen(sti),j=i,k+1a+i,(char)(n%10)十O*pk=i,a,n,i+l,pksi卄，*

27、s2,sl=p5、编程题(1)#includeintmam()inta=3、b=7、c=2;int*ptra=&a/ptrb=&b,*ptrc=&c;inttemp;printf(a=%d,b=%d,c=%diT；abc);pnntf(n*ptra=%d5*ptrb=%d,*ptrc=%dnn9*ptra,*ptrb/ptrc);if(*ptra*ptrb)temp=*ptra;*ptra=*ptib;1*ptib=temp;if(*ptra*ptrc)temp=*ptra;*ptra=*ptrc;*ptrc=temp;if(*ptrb*ptic)temp=*ptib;*ptrb=*ptrc;

28、*ptrc=temp;pnntf(a=%d,b=%d,c=%dir,a,b,c);pnntf(H*ptra=%d5*ptrb=%d,*ptrc=%dnn9*ptra,*ptrb/ptrc);return0;(2)#include#ineludevoidinputdata(inta,mtn);voidprocess(mta,iiitn);voidoutputdata(intajntn);intmam()inta109n=10;mputdata(aji);outputdata(a,n);process(aji);outputdata(a,n);system(,!PauseH);return0;vo

29、idinputdata(inta,intu)099之间的数inti;foi(i=0;in;i十十)scanf(”d”,a+i);voidoutputdata(int*ptr,intn)inti;2pnntf(nii=OutPutDataStart=nM);foi(i=0;in;i十十)priiitf(,%4dM,*ptr+);pnntf(nii=OutPutDataEnd=iin);voidprocess(mtn)inti,maxi,nuni;intmax=-l4iiui=101;foi(i=0;in;i+)if(max*(ptr+i)nini=ptii;ninn=i;if(niuu!=0)1

30、=pti0;pti0=puninu;ptiniuu=i;if(maxi!=n-1)l=ptlll-l;ptin-l=pumaxi;ptimaxi=i;if(maxi=0&num=n-1)i=ptimaxi;ptimaxi=ptiniuu;ptiniuu=i;(3)(3)include3mtstiLength(char*);intmam()staticcharstr81;gets(str);pnntf(nstiingn%snlength:%3diiM,sU,strLengtli(str);system(l!PauseH);return0;intstiLength(char*s)chai*p=s;

31、while(*p)p+;return(p-s);(4)#include#defineM3defineN4voidTranspose(int(*a)N,iiit(*T)M);intmam()staticintaMN,TNM;inti,j;for(i=0;iM;i+)for(j=0;jN;j+)scanf(”d”,&aij);piintf(ii=OrmginalMatrixStail=ii);fbr(i=0;iM;i+)foi(j=0;jN;j+)piintf(n%4dn,ai|j);pnntf(Hirr);pnntf(nii=OrmginalMatrixEnd=nn);Transpose(a,T

32、);pnntf(nii=TiansposeMatrixStait=nn);for(i=0;1N;1-H-)for(j=0;jM;j+)piintf(n%4dTi|j)；pnntf(Hirr);4pnntf(nii=TiansposeMatrixEnd=iin);return0;voidTranspose(mt(*a)Njut(*T)M)inti,j;for(i=0;1N;i-H-)for(j=0;jM;j-H-)TiUJ=aDlW；(5)#includeintmam()(3)(3)staticcharsouice81,target81;intresult;gets(souice);gets(t

33、arget);result=Strcmp(source,target);if(result)if(result0)pnntf(n%s%snH,source,target);elsepriiitf(n%s=%snH,source,target);return0;intStrcmp(char*s,chai*t)wlule(*s&*t&(*s=*t)s十十；t卄；return*s-*t;(6)#include5#defiiieM5#defineN3intsum(mt*a);intmam()staticintaMN;inti,j;fbi(i=0;iM;i+)for(j=0;jN;j+)scanf(”d

34、”,&aij);fbi(i=0;iM;i+)piintf(HRow%dsum:%3dnM,i,sum(ai);return0;intsum(mt*pti)inti,result=0;fbr(i=0;1N;i+)result十=*(pti+i);returnresult;备7章习题答案1、选择题:(1)C(2)C(3)D(4)B(5)A(6)C(7)B(8)A(9)D(10)B(11)D(12)D(13)A2、判断题(1)X(2)V(3)V(4)X(5)J(6)X(7)V(8)X(9)V(10)V第8章习题答案1、选择题：(1)C(2)D(3)A(4)A(5)D(6)C(7)D(8)B2、填空题

35、.(成员域访问运算符)，-)(成员域间接访问运算符)4,6.0enumtvpedefage,q-name,q-age3、阅读程序，写出下面程序的运行结果p!=NULL,c十十，p-nextpl-next,p1-next5p1-next4、程序阅读题7,3zhangping20Li:3Zhang:3Wang:25、编程题#include#include#defiiieN10/*学生人数*/#defiiieM3/*课程数*/stiuctstu/*定义结构体类型*/chainame15;chainum6;floatscoreM;floataver;studentN;/*说明结构体变量*/stiuct

36、stufiiidmax(sti-uctstustudent);voidmput(stnictstustudent);voidoutput(stnictstustudent);mtmain()stmctstutemp;mput(student);output(smdent);temp=fiiidmax(student);pnntf(HMaxis:iin);pnntf(n%15s%8s%7.2f%7.2f%7.2f%7.2,temp.nunL1temp,score09temp.scorel,temp,score2,temp.aver/M);system(HPausen);let

37、uni0;structstufiiidmax(sti-uctstustudent)floatmax=0.0;intijiiaxi;foi(i=0;iN;i+)if(maxstudenti.aver)max=studenti.aver;maxi=1；letunistudentmaxi;voidmput(stmctstustudent)intij;priiitf(Mmputdata:n,r);fbi(i=O;iN;i+)scanf(M%s%s,,studenti.num);studenti.aver=0;foi(尸0;jM;j卄)scanf(M%f&studenti.sc

38、oiej);studenti.aver+=studenti.scoie|j;voidoutput(stnictstustudent)intlj;foi(i=0;iN;i+)pnntf(n%15s%8s文本文件，二进制文件fopeii,fclosefprmtf,fscaiif,feoffviite,fiead,fputs,?studenti.nuiii);文本文件，二进制文件fopeii,fclosefprmtf,fscaiif,feoffviite,fiead,fputs,fgetsfoi(尸0;jM;j卄)pnntf(H%7.2fstudenti.score|j);prmtf(M%7