1、C+與數據結構基礎簡明教程課后習題答案1-7-1輸出一個數的10倍#include<iostream>usingnamespacestd;intmain()cout<<"Pleaseinputaninterger:n"inta;cin>>a;cout<<"result="<<a*10<<endl;return0;1-7-2輸出兩個數中的較小的#include<iostream>usingnamespacestd;intmain()doublex,y,min;cout<

2、;<"pleaseinputtwonumbers"<<endl;cin>>x>>y;min=(x>y?y:x);cout<<"thesmalleris"<<''<<min<<endl;return0;1-7-3/輸入半徑計算周長和面積#include<iostream>usingnamespacestd;intmain()cout<<"請輸入半徑n"doublerad;cin>>rad;d

3、oublec,s;c=2*3.14*rad;s=3.14*rad*rad;cout<<"周長是"<<c<<endl;cout<<"面積是"<<s<<endl;return0;1-7-4/將10000秒化成小時分鐘秒#include<iostream>usingnamespacestd;intmain()inthour,min,second;hour=10000/3600;min=(10000%3600)/60;second=10000-hour*3600-60*min;c

4、out<<hour<<"hours"<<min<<"minutes"<<second<<"seconds"<<endl;return0;1-7-5/將一個三位數倒敘輸出#include<iostream>usingnamespacestd;intmain()intnum,num_bai,num_shi,num_ge;cout<<"請輸入一個三位數"cin>>num;num_bai=num/100;

5、num_shi=(num-num_bai*100)/10;num_ge=num-num_bai*100-num_shi*10;cout<<num_ge<<endl;cout<<num_shi<<endl;cout<<num_bai<<endl;return0;2-3/簡單的輸入輸出#include<iostream>usingnamespacestd;intmain()doubley,n;cout<<"pleaseinputanumbern"cin>>n;if(n&g

6、t;0)y=n+1;if(n=0)y=0;cout<<"theresultis:"<<''<<y;return0;2-4/輸出學生學號和對應的成績等級#include<iostream>usingnamespacestd;intmain()doublefenshu;intxuehao;chardengji;inti;for(i=1;i<=10;i+)student scoren"dengji='A'dengji='B'dengji='C'dengj

7、i='D'onerror:cout<<"pleaseinputcin>>fenshu;if(fenshu>=90&&fenshu<=100)if(fenshu>=80&&fenshu<90)if(fenshu>=600&&fenshu<80)if(fenshu>=0&&fenshu<60)if(fenshu<0)cout<<"error"gotoonerror;cout<<"

8、error"gotoonerror;cout<<"theidis"<<i<<endl;cout<<"thescoreis"<<dengji<<endl;return0;2-5/判斷輸入字符類別#include<iostream>usingnamespacestd;intmain()charzifu;intascii;cout<<"pleaseinputacharacteristicn"cin>>zifu;ascii=z

9、ifu;if(ascii>=48&&ascii<=57)cout<<"數字n"gotoend;if(ascii>=97&&ascii<=122)cout<<"小寫字母n"gotoend;if(ascii>=65&&ascii<=90)cout<<"大寫字母n"gotoend;cout<<"其他字符"cout<<endl;end:return0;2-6/求圓周率的近似值#in

10、clude<iostream>#include<iomanip>usingnamespacestd;intmain()intxishu=-1;doubledanshu=1.0;inti=1;doublesifenzhipi=0;doxishu=xishu*(-1);danshu=1.0/(2*i-1);sifenzhipi=sifenzhipi+xishu*danshu;i+；while(danshu>=0.000001);cout<<setprecision(15)<<sifenzhipi*4<<endl;return0;)2

11、-7輸出斐波那契數列前40個數，以8*5的格式輸出#include<iostream>#include<iomanip>usingnamespacestd;intmain()intb=2;intfeibo1=0;intfeibo2=1;cout<<setw(9)<<'0'<<setw(9)<<'1'for(inti=1;i<=38;i+)inta=feibo2;feibo2=feibo1+feibo2;feibo1=a;cout<<setw(9)<<feibo2

12、;b=b+1;if(b%8=0)cout<<endl;return0;2-8/統計輸入的元音字母個數#include<iostream>usingnamespacestd;intmain()charzimu;inta,e,i,o,u;a=e=u=i=o=0;begin:cin>>zimu;switch(zimu)case'a':a+;break;case'e':e+;break;case'i':i+;break;case'o':o+;break;case'u':u+;break;

13、case'#':gotoend;)gotobegin;end:cout<<a<<endl<<e<<endl<<i<<endl<<o<<endl<<u<<endl<<a+e+i+o+u;return0;)2-10計算5!+6!+7!usingnamespacestd;intmain()inti,j;intsum=0;for(i=5;i<=7;i+)intjiecheng=1;for(j=1;j<=i;j+)jiecheng=jiechen

14、g*j;sum=sum+jiecheng;cout<<sum;return0;2-11/從2開始100個素數#include<iostream>usingnamespacestd;intmain()intnum=1;intsushu=0;start:;num+;for(inti=2;i<=num;i+)if(num%i=0)break;if(i=num)(cout<<num<<endl;sushu+=1;)if(sushu!=100)gotostart;return0;)2-12/百錢買百雞問題#include<iostream>

15、;usingnamespacestd;intmain()(intx,y,z;for(x=0;x<=100;x+)(for(y=0;y<=100;y+)(cout<<for(z=0;z<=100;z+)if(x+y+z=100&&5*x+3*y+z/3=100&&z%3=0)x<<'t'<<y<<'t'<<z<<endl;)return0;)2-13#include<iostream>usingnamespacestd;intmai

16、n()(inta,b,c,d,e;c=0;cin>>a;cout<<"輸入"<<a<<endl<<"該數的三次方是"<<a<<"個連續奇數"b=1;e=a*a*a;while(c!=e)(d=b;c=0;for(inti=1;i<=a;i+)(c=c+d;d=d+2;b=b+2;/cout<<b-2;intf=b-4;for(intj=1;j<=a;j+)(f=f+2;cout<<f<<''

17、;cout<<"的和n"return0;2-14/輸出四方*形狀#include<iostream>usingnamespacestd;intmain()inti,j;for(i=1;i<=9;i+)j=1;for(j=1;j<=9;j+)if(i+j>=6&&i+j<=14&&j-i<=4&&i-j<=4)cout<<'*'elsecout<<''cout<<endl;return0;3-1-1/向

18、數組a中輸入10個整數，求其中的最大值，最小值和10個數的算術平均值#include<iostream>usingnamespacestd;intmain()inta10;for(inti=0;i<=9;i+)cin>>ai;intmax=a0,min=a0,sum=a0;for(intj=0;j<=9;j+)(sum=sum+aj;max=(max>aj?max:aj);min=(min<aj?min:aj);doubleave=sum/10.00;cout<<max<<endl<<min<<en

19、dl<<ave<<endl;return0;3-1-2#include<iostream>usingnamespacestd;intmain()(intscore10;intsum=0,a=0,b=0;for(inti=0;i<=9;i+)(cin>>scorei;sum=sum+scorei;doubleave=sum/10.0;for(intj=0；j<=9；j+)(if(scorej>ave)a+;if(scorej<60)b+;cout<<"成績大于平均值的人數是"<<a

20、<<endl<<"成績小于60的人數"<<b<<endl;return0;3-3-1#include<iostream>usingnamespacestd;intmain()(inta10,sum=0,min,max;doubleave;int*ptoa=a;for(inti=0;i<=9;i+)(cin>>*(a+i);sum+=*(a+i);min=*(a);max=*(a);for(intj=1;j<=9;j+)min=(min<*(a+j)?min:*(a+j);max=(ma

21、x>*(a+j)?max:*(a+j);cout<<max<<endl<<min<<endl;ave=sum/10.0;cout<<ave<<endl;return0;3-3-2#include<iostream>usingnamespacestd;intmain()/ 定義平均值/ 定義數組 a， sum 是各學生成績之和，inta10,sum=0,j=0,c=0;j是小于60的個數，c是大于平均值的個數doubleave=0;int*ptoa=a;/使用指針for(inti=0;i<=9;i+)

22、/輸入并算和，統計小于60的cin>>*(ptoa+i);sum+=*(ptoa+i);if(*(ptoa+i)<60)j+;/ 計算平均值/ 可以輸出平均值ave=sum/10.0;/cout<<ave<<endl;for(intk=0;k<=9;k+)/計算大于平均值的if(*(ptoa+k)>ave)(c+;)cout<<c<<endl<<j;return0;)3-3-3#include<iostream>usingnamespacestd;intmain()(charstring100

23、;cin>>string;inti=0,an=0,in=0;cout<<"您輸入的字符串"while(stringi!='0')(if(stringi='a')an+;if(stringi='i')in+;cout<<stringi;i+;)cout<<endl<<an<<endl<<in<<endl;3-3-3a#include<iostream>usingnamespacestd;intmain()chara100;

24、/定義存放字符串的數組char *ptoa=a;int i=0,an=0,in=0;cin>>a;while (*(ptoa+i)!='0')cout<<*(ptoa+i);switch (*(ptoa+i)/ 使用指針/an ， in 分別為 a， i 的個數/a 【 i 】/ 判斷case'a':an+;break;case'i':in+;break;i+;cout<<endl<<an<<endl<<in;return0;3-3-4#include<iostream

25、>usingnamespacestd;intmain()inta33;for(inti=0;i<=2;i+)(for(intj=0；j<=2；j+)(cin>>*(*(a+i)+j);)cout<<*(*(a+0)+0)+*(*(a+1)+1)+*(*(a+2)+2)<<endl;cout<<*(*(a+0)+2)+*(*(a+1)+1)+*(*(a+2)+0)<<endl;return0;)3-3-5v1#include<iostream>usingnamespacestd;intmain()(inta

26、11=2,4,5,8,12,14,16,18,20,30,0,b,i,m,j;cin>>b;a10=b;if(b<2)m=0;gotoend;if(b>30)for(i=0;i<=9;i+)if(ai+1>b)m=i+1;gotoend;end:;for(j=10;j>=m+1;j-)aj=aj-1;am=b;end2:;for(intk=0;k<=10;k+)cout<<ak<<endl;return0;3-3-5v2#include<iostream>usingnamespacestd;intmain()i

27、nti,j,temp;inta11=2,4,5,8,12,14,16,18,20,30;for(i=0;i<=10;i+)for(j=0;j<=10-i-1;j+)(if(aj>aj+1)temp=aj+1;aj+1=aj;aj=temp;for(intk=0;k<=10;k+)cout<<ak<<'cout<<'n'return0;3-3-5v3#include<iostream>usingnamespacestd;intmain()inta11=2,4,5,8,12,14,16,18,20,30

28、,num,i,j;cout<<"請輸入一個整數"cin>>num;if(num>a9)a10=num;else(for(i=0;i<=11;i+)(if(ai>num)(for(j=9;j>=i;j-)(aj+1=aj;ai=num;break;for(i=0;i<=10;i+)(cout<<ai<<''return0;3-3-5final#include<iostream.h>voidmain()inta11=2,4,5,8,12,14,16,18,20,30,b,i

29、=0,j=10;cin>>b;while(ai<b&&i<=9)i+;while(j>i)aj=aj-1；j-；)ai=b;cout<<"輸入插入后的結果："for(i=0;i<11;i+)cout<<ai<<""cout<<endl;)3-3-6#include<iostream>usingnamespacestd;intmain()inta53,s5=0,0,0,0,0,temp;for(inti=0;i<=4;i+)cout<

30、<"請輸入第"<<i+1<<"行的數據"<<endl;for(intj=0;j<=2;j+)cin>>*(*(a+i)+j);*(s+i)+=*(*(a+i)+j);/*/注釋掉的部分可以輸出每行數據之和for(intk=0;k<=4;k+)cout<<*(s+k)<<endl;*/for(intm=0;m<=4;m+)for(intn=0;n<=4-m-1;n+)if(*(s+n)>*(s+n+1)temp=*(s+n+1);*(s+n+1)=*

31、(s+n);*(s+n)=temp;for(intl=0;l<=4;l+)cout<<endl<<*(s+l);cout<<endl;system("pause");return0;4-3#include<iostream>usingnamespacestd;intfun1(intx,inty);intfun2(intx,inty);intfun3(intx,inty);intfun4(intx,inty);intmain()inta,b;COUt<V"輸入兩個數cin»a»b;cou

32、t«"兩個數的和的平方是"«fun1(a,b)«endl;cout«"兩個數的平方和是"«fun2(a,b)«endl;cout«"兩個數的差的平方是"«fun3(a,b)«endl;cout«"兩個數平方的差是"«fun4(a,b)«endl;return0;)intfun1(intx,inty)(intz=(x+y)*(x+y);returnz;)intfun2(intx,inty)(intz

33、=x*x+y*y;returnz;intfun3(intx,inty)intz=(x-y)*(x-y);returnz;intfun4(intx,inty)intz=x*x-y*y;returnz;4-4#include<iostream>usingnamespacestd;doublejc(intx);intsm(intx);intmain()intm,n,s2;doubles1;cin>>m>>n;s1=jc(m)/(jc(n)*jc(m-n);s2=sm(m)-sm(n);cout<<s1<<endl<<s2;ret

34、urn0;doublejc(intx)s*=i;s+=i;doubles=1;for(inti=1;i<=x;i+)returns;intsm(intx)ints=0;for(inti=1;i<=x;i+)returns;4-6#include<iostream>#include<cmath>usingnamespacestd;doublejxf(intn);doubletxf(intn);doublef(doublex);/constpi=3.1415927;intmain()intn;doubley1,y2;cin>>n;y1=jxf(n);

35、y2=txf(n);cout<<y1<<endl<<y2;return0;doublejxf(intn)doublesum=0,s;for(inti=0;i<=n-1;i+)s=(i*3.14)/n;sum+=(3.14/n)*f(s);returnsum;doubletxf(intn)doublesum=0,s1,s2;for(inti=0;i<=n-1;i+)s1=i*3.14/n;s2=(i+1)*3.14/n;sum+=3.14/n*(f(s1)+f(s2);sum/=2.0;returnsum;doublef(doublex)doubl

36、ey;y=sin(x)+cos(x);returny;4-6v1#include<iostream>#include<cmath>usingnamespacestd;doublejxf(intn);doubletxf(intn);doublef(doublex);constpi=3.1415927;intmain()intn;doubley1,y2;cin>>n;y1=jxf(n);y2=txf(n);if(abs(y1-2)>abs(y2-2)cout<<"矩形法"elsecout<<"梯形法&q

37、uot;return0;doublejxf(intn)doublesum=0;for(inti=0;i<=n-1;i+)sum+=pi/n*f(i*pi/n);returnsum;doubletxf(intn)doublesum=0;for(inti=0;i<=n-1;i+)sum+=pi/n*(f(i*pi/n)+f(i+1)*pi/n);sum/=2;returnsum;doublef(doublex)doubley;y=sin(x)+cos(x);returny;4-6v2error#include<iostream>#include<cmath>us

38、ingnamespacestd;doublejxf(intn);doubletxf(intn);doublef(doublex);constpi=3.1415927;intmain()intn;doubley1,y2;cin>>n;y1=jxf(n);y2=txf(n);if(abs(y1-2)>abs(y2-2)cout<<"矩形法"elsecout<<"梯形法"return0;doublejxf(intn)doublesum=0;for(inti=0;i<=n-1;i+)sum+=pi/n*f(i*pi

39、/n);returnsum;doubletxf(intn)doublesum=0;for(inti=0;i<=n-1;i+)sum+=pi/n*(f(i*pi/n)+f(i+1)*pi/n);sum/=2;returnsum;doublef(doublex)doubley;y=sin(x)+cos(x);returny;4-7#include<iostream>usingnamespacestd;intmy(intx,inty);intmb(intx,inty);intmain()inta,b,max,min;cin>>a>>b;max=my(a,b)

40、;min=mb(a,b);cout<<max<<endl<<min<<endl;system("pause");return0;intmy(intx,inty)for(inti=(x>y?y:x);i>=1;i-)if(x%i=0&&y%i=0)returni;intmb(intx,inty)for(inti=(x>y?x:y);i>=1;i+)if(i%x=0&&i%y=0)returni;4-11#include<iostream>usingnamespa

41、cestd;voiddelchar(char*s1,chars2);intmain()chars1100;chars2;cin>>s1>>s2;delchar(s1,s2);return0;voiddelchar(char*s1,chars2)for(inti=1;*(s1+i)!='0'i+)if(*(s1+i)=s2)for(intj=0;*(s1+i+j)!='0'j+)*(s1+i+j)=*(s1+i+j+1);cout<<s1;4-12#include<iostream>#include<cmath

42、>usingnamespacestd;intcheck(inta,intb,intc);doubles(doublea,doubleb,doublec);doublea,b,c;cin>>a>>b>>c;if(check(a,b,c)cout<<s(a,b,c);elsecout<<"error"system("pause");return0;intcheck(inta,intb,intc)if(a+b>c&&abs(a-b)<c)return1;elseret

43、urn0;doubles(doublea,doubleb,doublec)doublep=(a+b+c)/2;doublearea=sqrt(p*(p-a)*(p-b)*(p-c);returnarea;4-13#include<iostream>#include<cmath>usingnamespacestd;fun(intn,intk);intmain()intn,k;cin>>n>>k;cout<<fun(n,k)<<endl;system("pause");return0;intfun(intn

44、,intk)0;if(k>n|k<1)returnelseints;s=n/pow10(k-1);s=s%10;returns;intpow10(intx)ints=1;for(inti=1;i<=x;i+)s*=10;returns;4-14#include<iostream>usingnamespacestd;doubleave(intp4,inti);intmain()inta54;for(inti=0;i<=4;i+)for(intj=0;j<=3;j+)cin>>aij;for(i=0;i<=4;i+)cout<<

45、;ave(a,i)<<endl;system("pause");return0;doubleave(intp4,inti)doublesum=0;for(intj=0;j<=3;j+)sum+=pij;sum/=4;returnsum;4-15#include<iostream>usingnamespacestd;intfind(charstr,chara);intmain()charstr100,a;cin>>str>>a;cout<<find(str,a)+1;system("pause&quo

46、t;);return0;intfind(charstr,chara)for(inti=0;stri!='0'i+)if(stri=a)returni;break;if(stri='0')return-1;/4_16#include<iostream>usingnamespacestd;intchange(intn,intR,int*a);intmain()cout<<"PleaseinputnandR(2<=R<=16)"<<endl;intn,R,a10;cin>>n>>

47、;R;inti=change(n,R,a);for(intj=i-1;j>=0;j-)switch(aj)case11:cout<<'A'break;case12:cout<<'B'break;case13:cout<<'C'break;case14:cout<<'D'break;case15:cout<<'E'break;default:cout<<aj;system("pause");return0;intchan

48、ge(intn,intR,int*a)inti=0;while(n!=0)*(a+i)=n%R;n/=R;i+;returni;4-17#include<iostream>usingnamespacestd;constintN=5;intinit(intaN);voidfun1(intaN);voidfun2(intaN);voidfun3(intaN,intsum);voidfun4(intaN);intmain()intsum=0;inta2N;sum=init(a);cout<<"(1)"<<endl;fun1(a);cout<

49、;<"(2)"<<endl;fun2(a);cout<<"(3)"<<endl;fun3(a,sum);cout<<"(4)"<<endl;fun4(a);return0;intinit(intaN)intsum=0;for(inti=0;i<=N-1;i+)a0i=i+1;cin>>a1i;sum+=a1i;returnsum;voidfun1(intaN)for(inti=0;i<=N-1;i+)if(a1i>85)(cout<&

50、lt;a0i<<''<<a1i<<endl;)voidfun2(intaN)(for(inti=0;i<=N-1;i+)if(a1i<60)(cout<<a0i<<''<<a1i<<endl;)voidfun3(intaN,intsum)(intaveplus=0;doubleave=sum/N;for(inti=0;i<=N-1;i+)if(a1i>=ave)aveplus+;cout<<aveplus<<endl;voidfun

51、4(intaN)for(inti=0;i<=N-1;i+)for(intj=0;j<=N-1;j+)if(a1j>a1j+1)inttemp1=a1j+1;a1j+1=a1j;a1j=temp1;inttemp2=a0j+1;a0j+1=a0j;a0j=temp2;for(i=0;i<=N-1;i+)cout<<a0i<<''<<a1i<<endl;5-5/計算當前日期是一年之中的第幾天#include<iostream>usingnamespacestd;/定義日期類private:/y年m月

52、d天nod一年中的第幾天ly是否是閏年inty,m,d,nod,ly;public:Date(intioy=2009,intiom=5,intiod=1)y=ioy;m=iom;d=iod;intcheckdate();intIssleapyear();voidPrint();intNumberOfDays();/是否是閏年intDate:Issleapyear()returnly=(y%400=0)|(y%4=0&&y%100!=0);/計算一年之中的第幾天intDate:NumberOfDays()inta213=0,31,29,31,30,31,30,31,31,30,3

53、1,30,31,0,31,28,31,30,31,30,31,31,30,31,30,31;nod=0;for(inti=0;i<=m-1;i+)nod+=aIssleapyear()i;nod+=d;returnnod;/判斷日期是否合法intDate:checkdate()return(m>0&&m<13)&&(d>0&&d<=31);/輸出voidDate:Print()cout<<y<<"年"<<m<<"月"<<

54、;d<<"日"<<"是該年的第"<<NumberOfDays()<<"天"<<endl;/主函數intmain()Dated1;Dated2(1991,5,2);inty,m,d;cout<<"請依次輸入年月日cin>>y>>m>>d;Dated3(y,m,d);d1.Print();d2.Print();if(d3.checkdate()d3.Print();elsecout<<"Error"system("pause");system(&qu