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解析习题答案解析完美打印版

.编辑料.整理(1)A(2)C(3)D(4)C(5)B(1)函数(2)主函数(main)(3)printf()，scanf()CDCDCDBB(1)1(2)26(3)6，4，2(4)10,6(5)3.000000(6)双精度(double)(7)9(8)字母，数字，下划线(9)13.700000(10)11(11)((m/10)%10)*100+(m/100)*10+m%10(12)0(17)x==0(18)sqrt(fabs(a-b))/(3*(a+b))(19)sqrt((x*x+y*y)/(a+b))CCCDDBCDBCBCBBB16A(1)用；表示结束(2){}(3)y=x<0?1:x==0?0:-1(4)y%4==0&&y%100!=0||y%400==0(5)上面未配对(6)default标号(7)while，dowhile，for(8)dowhile(9)本次(10)本层(1)yes(2)*&(3)ABother(4)2870(5)2，0(6)8(7)36(12)1，-2(2)m=n，m！=0，m=m/10(3)t<eps,t*n/(2*n+1),printf(“%lf\n”,2*s)(4)m%5==0，printf(“%d\n”,k)(5)cx=getchar(),cx!=front,cx(6)doubles=0,1.0/k,%lf(7)s>=0,s<gmin,(1)．includestdioh>{lexylseifxxy=2*x-11;y=3*x-11;printflfny;}(2)．includestdioh>{blexyzminlfxyzmin=y;min=x;min=z;printfminlfnmin);}(3)．includestdioh>{d);w((y-1)*365+(y-1)/4-(y-1)/10y/400)%7;{{kreakreakreakbreakbreakbreakbreakbreakdbreakdbreakdbreak}}printfn);printfdn,s);}(4)．includestdioh>{lseifpplseifpprp05;lseifppr(p-.03;elseifppr+20*p60)*0.015;fpr20*0*0.015+(p-100)*0.01;printffnr;}(5)．includestdioh>{while((c=getchar())!='\n'){harc}} (6)．intmain(){printf("输入一个正整n);while(k<m){printfdk;m=m/k;}kprintfdnm);} (7)．includestdioh{{pa}printfdns;}(8)．includestdioh{printfd00*i+10*j+k);}(9)．includestdiohincludemathh{abxfff{xab{}{}printff\n",x);} (10)．hintmain(){ubleepstsxswhile(fabs(t)>=eps){}printfdlfn,n,s);} (11)．includestdioh{unsignedlongstpscanf("%u",&s);while(s!=0){{p}}printfunt;}BADCDBDAB(1)2(2)嵌套，递归(3)全局变量，局部变量，静态变量，动态变量(4)auto,static,register,extern(5)外部变量(6)编译，运行(4)i=5(5)求水仙花数(6)-5*5*5(7)30(8)010212(1)floatfun(float,float)，x+y,x-y,z+y,z-y(2)x，x*x+1(3)s=0,a=a+b(1)．includestdiohunsignedintfun(unsigned{unsignedints;printfunfuns));}unsignedintfun(unsignedint{signedintpwhile(s!=0){ps}}(2)．includestdiohincludestdlibhincludemathhoatoatoatiain{fff",&a,&b,&c);{printf("不是一元二次方程}bacd}voidf1(floata,floatb,float{xbsqrtd)/(2*a);xbsqrtd))/(2*a);printff%.2f\n",x1,x2);}}voidf2(floata,floatb,float{xba);xba);printff%.2f\n",x1,x2);}}voidf3(floata,floatb,float{xba);xsqrtd2*a);printffi%.2f\n",x1,x2);printffi%.2f\n",x1,x2);}} (3).doublep(int,double);intmain(){blex{printflfnpn,x));}doublepintndoublex){lepnnpnn)*x*p(n-1,x)-(n-1)*pnxn;}(4)．includestdiohdefineRATE0.053ublefunfloatiddisplayfloatint{d",&dep,&season);laydepseason}oublefunfloatd{}iddisplayfloatdints{printf("---------------------{printf("%-4d%-.2f-.2f\n",i,fun(d),fun(d)*i+d);printf("---------------------}} (5)．doublefun(void);intmain(){printflfnfun));}blefunvoid{doubles;while((double)(2*n-1)/((2*n)*{blenn}}(6)．includestdioh{m=m/10;p}}printfdnfunw));}{m=w;while(m>10){(1)0，9(2)floatrealArray[100],charstrArray[16],int(3)运算符sizeof(4)6字节(1)aa(2)abcd(3)ahAMa(4)0010(5)1345(6)Thisisthetitle.Name2isZekeThebiggestnamealpabeticallyisZekeBothnamesareRosalindaZeke(7)00000000234567568107481469121518218121620242810152017730351218243036427142128354249(1)a[i][j]!=a[j][i],1(2)0,a[i]<a[mini],maxi=i,a[maxi]=a[mini](3)inta[],intb[],b[i]=a[i],-999,arraycopy(a,b),(4)a<sizeof(ch),if(1)includestdiohintmain(){inta,aijaijtemp}printfdai][j]);rintfn}}(2)includestdioha[i][j]=t--;}printfdai][j]);rintfn}}(3)includestdioh>#defineM3#defineN4#defineR5intaMNbNRcMRprintfMatrixan");forii<M;i++)forjj<N;j++)scanfda[i][j]);printfMatrixbn;forii<N;i++)forjj<R;j++)scanfdb[i][j]);forii<M;i++)forjj<N;j++)forkk<R;k++)cika[i][j]*b[j][k];forii<M;i++){for(j=0;j<R;j++)printf("%3d",c[i][j]);rintfn}}(4)includestdioh>#defineM5maximinitempfor(i=0;i<M;i++)foriiM;i++){xaimax=a[i];maxi=i;}naimin=a[i];mini=i;}}minitempfor(i=0;i<M;i++)printf("%3d",a[i]);}includestdioh>#defineM3#defineN4rowforiiM;i++){forjjN;j++){scanfdai[j]);}sumrowmax=sumrow;maxi=i;}}printfwhichcolsumwillbecaculated?(>0)");for(i=0;i<M;i++)laicolprintfThedthrowssumismax,max=%d\n",maxi+1,max);printfThedthcolumnssum=%d\n",col,sumcol);}(6)includestdioh>#defineM81lushstdinprintfWhichcharacterwillbefound?");for(i=0;i<strlen(str);i++)if(ch==str[i])printf("Thenumberofcharacter'%c'is%d\n",ch,count);return0;}(7)includestdioh>includestdlibh>defineN10//同学人数defineM5//课程数oidenterscoresvoidvoidsortscoresintscoreM],intaverage[N][3]);voiddispscoresintscore[M]);voidhistogramintnintscore[][M]);oidprintcharintnM{esprintfn=======OringenalScoreStart=========\n");pscoresscoreprintfn=======OringenalScoreEnd===========\n");printfn=======SortedScoreStart============\n");ortscoresscoreaverprintfn=======SortedScoreEnd==============\n");printfnWhichclasswillbestatisticed?\n");scanfdcourse;histogramcoursescore);}oidenterscores{fori0;i<N;i++){ijveriscoreij}}for(i=0;i<N;i++)for(j=1;j<3;j++)5aver[i][j]=i;}voidsortscoresintscoreM],intaverage[N][3]){for(i=0;i<N-1;i++)for(j=0;j<N-1-i;j++)if(average[j][0]<average[j+1][0]){averagejaveragej;averagejtempaveragejaveragej;ragejtempindex}printfnScore1Score2Score3Score4Score5\n");for(i=0;i<N;i++){for(j=0;j<M;j++){printfdscore[t][j]);}rintfn}}voiddispscoresintscore[M]){printfnScore1Score2Score3Score4Score5\n");for(i=0;i<N;i++){for(j=0;j<M;j++)printfdscore[i][j]);rintfn}}oidprintcharintn{6inti;oriiniputchar}voidhistogramintcourseintscore[][M]){for(i=0;i<N;i++)seforiiNi*统计各分段人数*/{segstemptemp将成绩分段*/}printfnSegmentNumbern;foriii方图，每段的人数*/{printfd:%5d|",(i+1)*10+50,segs[i]);intcharsegsiutcharn}utcharn}(8)includestdioh>#defineM81intmain(){for(i=0;i<strlen(str);i++)if(ch<str[i])for(i=0;i<strlen(str);i++)if(ch==str[i])printf("max='%c',count=%d\n",ch,count);}7BBDDACCABDCBCDAA(1)常量，变量(2)指针(3)2(4)12，12(5)a[0],a[3](1)5(2)6(3)abcdefglkjih(4)976531(5)5,9(6)2,4,5,7,6,0,11,9,7,3,(7)string_a=Iamateacher.entstring_b=Iamateacher.(1)*p!='\0',*p-'0',j—(2)i<strlen(str),j=i,k+1(3)a+i,(char)(n%10)+'0'(4)*pk=i,a,n,i+1,pk(5)s1++,*s2,s1=p(1)includestdioh>{rbbptrccprintfadbd,c=%d\n",a,b,c);printfptradptrb=%d,*ptrc=%d\n",*ptra,*ptrb,*ptrc);if(*ptra>*ptrb){}if(*ptra>*ptrc){mp}if(*ptrb>*ptrc){mp}printfadbd,c=%d\n",a,b,c);printfptradptrb=%d,*ptrc=%d\n",*ptra,*ptrb,*ptrc);}(2)includestdioh>includestdlibh>voidinputdataintaintn);voidprocessintaintn);voidoutputdataintaintn);{tdataancessantdataan}{for(i=0;i<n;i++)}voidoutputdataintptrintn){printfn========OutPutDataStart=============\n");for(i=0;i<n;i++)printfdptr++);printfn======OutPutDataEnd================\n");}voidprocessintptrintn){for(i=0;i<n;i++){if(max<*(ptr+i)){max=*(ptr+i);maxi=i;}if(min>*(ptr+i)){min=ptr[i];mini=i;}}{ptrptrmini];ptr[mini]=i;}{ptrnptr[maxi];ptr[maxi]=i;}ifmaximinin){ptrmaxiptrmini;ptr[mini]=i;}}(3)includestdiohntstrLengthchar{printfstringslength:%3d\n",str,strLength(str));}{while(*p)p++;return(p-s);}(4)includestdioh>#defineM3#defineN4voidTransposeint*a)[N],int(*T)[M]);intmain(){NTNMfor(i=0;i<M;i++)for(j=0;j<N;j++)scanfdai[j]);printfn==OringinalMatrixStart=========\n");for(i=0;i<M;i++){for(j=0;j<N;j++)printf("%4d",a[i][j]);rintfn}printfn==OringinalMatrixEnd===========\n");Transposea,T);printfn==TransposeMatrixStart=========\n");for(i=0;i<N;i++){for(j=0;j<M;j++)printf("%4d",T[i][j]);rintfn}printfn======TransposeMatrixEnd===========\n");}voidTransposeint*a)[N],int(*T)[M]){for(i=0;i<N;i++)for(j=0;j<M;j++)T[i][j]=a[j][i];}(5)includestdioh>{ourcetargetrcegettarget{if(result<0)printfss\n",source,target);printfss\n",source,target);}printfss\n",source,target);}hart{while(*s&&*t&&(*s==*t)){}}(6)includestdioh>#defineN3{for(i=0;i<M;i++)for(j=0;j<N;j++)scanfdai[j]);for(i=0;i<M;i++)printfRowdsum:%3d\n",i,sum(a[i]));}{for(i=0;i<N;i++)CBADBDDA(2)4,6.0(3)enum(4)typedef(5)<person+3,old=p->age,q->name,q->age(1)p!=NULL,c++,p->next(2)p1->next,p1->next,p1->next(1)7,3(2)zhangping20(3)Li:3Zhang:3Wang:2includestdioh>includestdlibh>#defineN10/*学生人数*/#defineM3/*课程数*/structstu*/entNmaxstructstustudentvoidinputstructstustudent);voidoutputstructstustudent);{studentprintfMaxis\n");printfss%7.2f%7.2f%7.2f%7.2f",,temp.num,coretempscoretempscore}axstructstustudent{{{max=student[i].aver;maxi=i;}}}voidinputstructstustudent]){printfinputdatan;tudentinamestudentinum{udentiscorejaverstudentiscorej}}}voidoutputstructstustudent]){printfss",student[i].name,student[i].num);printf2f",student[i].score[j]);printf2f\n",student[i].aver/M);}}2(1)文本文件，二进制文件(2