答案-c++面向对象程序设计课后习题答案(谭浩强版)

1、精品精品- - 可编辑 -精品精品-可编辑-第一章#include using namespace std;int main()coutThisis;coutaC+;coutprogram.endl;return 0;#include using namespace std;int main()int a,b,c;a=10;b=23;c=a+b;couta+b=;coutc;coutendl;return 0;#include using namespace std;int main()int a,b,c;int f(int x,int y,int z);cinabc;c=f(a,b,c);c

2、outcendl;return 0;int f(int x,int y,int z)int m;if (xy) m=x;else m=y;if (zm) m=z;return(m);#include using namespace std;int main()int a,b,c;cinab;c=a+b;couta+b=a+bendl;return 0;#include using namespace std;int main()int add(int x,int y);int a,b,c;cinab;c=add(a,b);couta+b=cendl;return 0;int add(int x

3、,int y)int c;c=x+y;return(c);#include using namespace std;int main()void sort(int x,int y,int z);int x,y,z;cinxyz;sort(x,y,z);return 0;void sort(int x, int y, int z)int temp;精品精品- - 可编辑 -精品精品-可编辑-if (xy) temp=x;x=y;y=temp;/ 内3个语句的作用是将 x和y的值互换)if (zx)coutz,x,yendl;else if (zy) coutx,z,yendl;else cout

4、x,y,zendl;#include using namespace std;int main()int max(int a,int b,int c=0);int a,b,c;cinabc;coutmax(a,b,c)=max(a,b,c)endl;coutmax(a,b)=max(a,b)a) a=b;if(ca) a=c;return a; 12:#include using namespace std;int main()void change(int ,int );int a,b;cinab;if(ab) change(a,b);coutmax=a min=bendl;return 0

5、;void change(int ,int )int r1,r2,temp;temp=r1;r1=r2;r2=temp;#include using namespace std;int main()void sort(int &,int &,int &);int a,b,c,a1,b1,c1;coutabc;a1=a;b1=b;c1=c;sort(a1,b1,c1);couta b c in sorted order is couta1 b1 c1j) change(i,j);if (ik) change(i,k);if (jk) change(j,k);void change(int &x,

6、int &y) int temp;temp=x;x=y;y=temp;#include #include using namespace std;int main() string s1=week,s2=end;couts1=s1endl;couts2=s2endl;s1=s1+s2;coutThe new string is:s1endl;return 0;#include #include using namespace std;int main() string str;int i,n;char temp;coutstr;n=str.size();for(i=0;in/2;i+)temp

7、=stri;stri=strn-i-1;strn-i-1=temp;coutstrendl;return 0;#include #include using namespace std;int main() int i;string str5=BASIC,C,FORTRAN,C+,PASCAL;void sort(string );sort(str);coutthe sorted strings :endl;for(i=0;i5;i+)coutstri ;coutendl;return 0;void sort(string s)int i,j;string t;for (j=0;j5;j+)f

8、or(i=0;isi+1)t=si;si=si+1;si+1=t;17: #include #include using namespace std;int main()long c5=10100,-123567, 1198783,-165654, 3456;int a5=1,9,0,23,-45;float b5=2.4, 7.6, 5.5, 6.6, -2.3 ;void sort(int );void sort(float );void sort(long );sort(a);sort(b);精品精品-可编辑-sort(c);return 0;)void sort(int a)int i

9、,j,t;for (j=0;j5;j+)for(i=0;iai+1)t=ai;ai=ai+1;ai+1=t; coutthe sorted numbers :endl; for(i=0;i5;i+)coutai;coutendlendl;void sort(long a)int i,j;long t;for (j=0;j5;j+)for(i=0;iai+1)t=ai;ai=ai+1;ai+1=t; coutthe sorted numbers :endl; for(i=0;i5;i+)coutai;coutendlendl;void sort(float a)int i,j;float t;f

10、or (j=0;j5;j+)for(i=0;iai+1)t=ai;ai=ai+1;ai+1=t; coutthe sorted numbers :endl; for(i=0;i5;i+)coutai;coutendlendl;18: #include #include using namespace std;template 精品精品- - 可编辑 -void sort(T a)int i,j,min;T t;for(i=0;i5;i+)min=i;for (j=i+1;jaj) min=j;t=ai; ai=amin; amin=t;coutthe sorted numbers :endl;

11、for(i=0;i5;i+)coutai;coutendlendl;int main() int a5=1,9,0,23,-45;float b5=2.4, 7.6, 5.5, 6.6, -2.3 ;long c5=10100,-123567, 1198783,-165654, 3456;sort(a);sort(b);sort(c);return 0;第二章1#include using namespace std;class Timepublic:void set_time();void show_time();private:/ 成员改为公用的int hour;int minute;in

12、t sec;void Time:set_time()/ 在 main 函数之前定义cinhour;cinminute;cinsec;void Time:show_time()/ 在 main 函数之前定义couthour:minute:secendl;int main()Time t1;t1.set_time();t1.show_time();return 0;2：#include using namespace std;class Timepublic:void set_time(void)cinhour;cinminute;cinsec;void show_time(void)coutho

13、ur:minute:secendl;private: int hour;int minute;int sec;Time t;int main()t.set_time();t.show_time();return 0;3：#include using namespace std;class Timepublic:void set_time(void);void show_time(void);private:int hour;int minute;int sec;void Time:set_time(void)cinhour;cinminute;cinsec;void Time:show_tim

14、e(void)couthour:minute:secendl;Time t;int main() t.set_time();t.show_time();return 0;4：/xt2-4-1.cpp(main.cpp)#include using namespace std;#include xt2-4.hint main()Student stud;stud.set_value();stud.display();return 0;/ 在此文件中进行函数的定义/ 不要漏写此行/xt2-4-2.cpp( / 在此文件中进行函数的定义/ 不要漏写此行#include xt2-4.h#include

15、 using namespace std;void Student:display( ) coutnum:numendl;coutname:nameendl;coutsex:sexnum;cinname;cinsex;5：/xt2-5-1.cpp(file1.cpp)#include #include xt2-5.hint main()Array_max arrmax;arrmax.set_value();arrmax.max_value();arrmax.show_value();return 0;/xt2-5-2.cpp(arraymax.cpp)#include using namesp

16、ace std;#include xt2-5.hvoid Array_max:set_value() int i;for (i=0;iarrayi;void Array_max:max_value()int i;max=array0;for (i=1;imax) max=arrayi;void Array_max:show_value() coutmax=maxendl; 6 ：解法一#include using namespace std;class Boxpublic:void get_value();float volume();void display();public:float l

17、engh;float width;float height;void Box:get_value() coutlengh;cinwidth;cinheight;float Box:volume() return(lengh*width*height);void Box:display() coutvolume()endl;int main()Box box1,box2,box3;box1.get_value();coutvolmue of bax1 is ;box1.display();box2.get_value();coutvolmue of bax2 is ;box2.display()

18、;box3.get_value();coutvolmue of bax3 is ;box3.display();return 0;解法二：#include using namespace std;class Boxpublic:void get_value();void volume();void display();public:float lengh;float width;float height;float vol;void Box:get_value() coutlengh;cinwidth;cinheight;void Box:volume() vol=lengh*width*he

19、ight;void Box:display() coutvolendl;int main()Box box1,box2,box3;box1.get_value();box1.volume();coutvolmue of bax1 is box1.display();box2.get_value();box2.volume();coutvolmue of bax2 is box2.display();box3.get_value();box3.volume();coutvolmue of bax3 is ;box3.display();return 0;第三章#include using nam

20、espace std;class Datepublic:Date(int,int,int);Date(int,int);Date(int);Date();void display();private:int month;int day;int year;Date:Date(int m,int d,int y):month(m),day(d),year(y) Date:Date(int m,int d):month(m),day(d)year=2005;Date:Date(int m):month(m)day=1;year=2005;Date:Date()month=1;day=1;year=2

21、005;void Date:display()coutmonth/day/yearendl;int main()Date d1(10,13,2005);Date d2(12,30);Date d3(10);Date d4;d1.display();d2.display();d3.display();d4.display();return 0;#include using namespace std;class Datepublic:Date(int=1,int=1,int=2005);void display();private:int month;int day;int year;Date:

22、Date(int m,int d,int y):month(m),day(d),year(y) void Date:display()coutmonth/day/yearendl;int main()Date d1(10,13,2005);Date d2(12,30);Date d3(10);Date d4;d1.display();d2.display();d3.display();d4.display();return 0;#include using namespace std;class Studentpublic:Student(int n,float s):num(n),score

23、(s)void display();private:int num;float score;void Student:display()coutnum scoreendl;int main()Student stud5=Student(101,78.5),Student(102,85.5),Student(103,98.5),Student(104,100.0),Student(105,95.5);Student *p=stud;for(int i=0;idisplay();return 0;#include using namespace std;class Studentpublic:St

24、udent(int n,float s):num(n),score(s)int num;float score;void main()Student stud5=Student(101,78.5),Student(102,85.5),Student(103,98.5),Student(104,100.0),Student(105,95.5);void max(Student* );Student *p=&stud0;max(p);void max(Student *arr)float max_score=arr0.score;int k=0;for(int i=1;imax_score) ma

25、x_score=arri.score;k=i;coutarrk.num max_scoreendl;#include using namespace std;class Studentpublic:Student(int n,float s):num(n),score(s)void change(int n,float s) num=n;score=s;void display()coutnum scoreendl;private:int num;float score;int main()Student stud(101,78.5);stud.display();stud.change(10

26、1,80.5);stud.display();return 0;解法一#include using namespace std;class Studentpublic:Student(int n,float s):num(n),score(s)void change(int n,float s) num=n;score=s;void display() coutnum scoreendl;/ 可改为 :void display() const coutnum scoreendl; private:int num;float score;int main()const Studentstud(1

27、01,78.5);stud.display();/stud.change(101,80.5);stud.display();return 0;解法二：#include using namespace std;class Studentpublic:Student(int n,float s):num(n),score(s)void change(int n,float s) const num=n;score=s;void display() const coutnum scoreendl;private:mutable int num;mutable float score;int main

28、()const Student stud(101,78.5);stud.display();stud.change(101,80.5);stud.display();return 0;解法三：#include using namespace std;class Studentpublic:Student(int n,float s):num(n),score(s)void change(int n,float s) num=n;score=s;void display() coutnum scoredisplay();p-change(101,80.5);p-display();return

29、0;8：#include using namespace std;class Studentpublic:Student(int n,float s):num(n),score(s)void change(int n,float s) num=n;score=s;void display() coutnum scoreendl;private:int num;float score;int main()Student stud(101,78.5);void fun(Student&);fun(stud);return 0;void fun(Student &stu)stu.display();

30、stu.change(101,80.5);stu.display();9：#include using namespace std;class Productpublic:Product(int n,int q,float p):num(n),quantity(q),price(p);void total();static float average();static void display();private:int num;int quantity;float price;static float discount;static float sum;static int n;void P

31、roduct:total()float rate=1.0;if(quantity10) rate=0.98*rate;sum=sum+quantity*price*rate*(1-discount);n=n+quantity;void Product:display()coutsumendl;coutaverage()endl;float Product:average()return(sum/n);float Product:discount=0.05;float Product:sum=0;int Product:n=0;int main()Product Prod3=Product(10

32、1,5,23.5),Product(102,12,24.56),Product(103,100,21.5);for(int i=0;i3;i+)Prodi.total();Product:display();return 0;10：#include using namespace std;class Date;class Timepublic:Time(int,int,int);friend void display(const Date &,const Time &);private:int hour;int minute;int sec;Time:Time(int h,int m,int

33、s)hour=h;minute=m;sec=s;class Datepublic:Date(int,int,int);friend void display(const Date &,const Time &);private:int month;int day;int year;Date:Date(int m,int d,int y)month=m;day=d;year=y;void display(const Date &d,const Time &t)coutd.month/d.day/d.yearendl;coutt.hour:t.minute:t.secendl;int main()

34、Time t1(10,13,56);Date d1(12,25,2004);display(d1,t1);return 0;11：#include using namespace std;class Time;class Datepublic:Date(int,int,int);friend Time;private:int month;int day;int year;Date:Date(int m,int d,int y):month(m),day(d),year(y) class Timepublic:Time(int,int,int);void display(const Date &

35、);private:int hour;int minute;int sec;Time:Time(int h,int m,int s):hour(h),minute(m),sec(s) void Time:display(const Date &d)coutd.month/d.day/d.yearendl;couthour:minute:secendl;int main()Time t1(10,13,56);Date d1(12,25,2004);t1.display(d1);return 0;12：#include using namespace std;templateclass Compa

36、republic:Compare(numtype a,numtype b);numtype max();numtype min();private:numtype x,y;template Compare:Compare(numtype a,numtype b)x=a;y=b;template numtype Compare:max()return (xy)?x:y;template numtype Compare:min()return (xy)?x:y;int main()Compare cmp1(3,7);coutcmp1.max() is the Maximum of two inte

37、ger numbers.endl;coutcmp1.min() is the Minimum of two integer numbers.endlendl;Compare cmp2(45.78,93.6);coutcmp2.max() is the Maximum of two float numbers.endl;coutcmp2.min() is the Minimum of two float numbers.endlendl;Compare cmp3(a,A);coutcmp3.max() is the Maximum of two characters.endl;coutcmp3.

38、min() is the Minimum of two characters.endl;return 0;第四章#include using namespace std;class Complexpublic:Complex()real=0;imag=0;Complex(double r,double i)real=r;imag=i;double get_real();double get_imag();void display();private:double real;double imag;double Complex:get_real()return real;double Compl

39、ex:get_imag()return imag;void Complex:display()cout(real,imagi)endl;Complex operator + (Complex &c1,Complex &c2)return Complex(c1.get_real()+c2.get_real(),c1.get_imag()+c2.get_imag();int main()Complex c1(3,4),c2(5,-10),c3;c3=c1+c2;coutc3=;c3.display();return 0;#include using namespace std;class Comp

40、lexpublic:Complex()real=0;imag=0;Complex(double r,double i)real=r;imag=i;Complex operator+(Complex &c2);Complex operator-(Complex &c2);Complex operator*(Complex &c2);Complex operator/(Complex &c2);void display();private:double real;double imag;Complex Complex:operator+(Complex &c2)Complex c;c.real=r

41、eal+c2.real;c.imag=imag+c2.imag;return c;Complex Complex:operator-(Complex &c2)Complex c;c.real=real-c2.real;c.imag=imag-c2.imag;return c;Complex Complex:operator*(Complex &c2)Complex c;c.real=real*c2.real-imag*c2.imag;c.imag=imag*c2.real+real*c2.imag;return c;Complex Complex:operator/(Complex &c2)C

42、omplex c;c.real=(real*c2.real+imag*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag);c.imag=(imag*c2.real-real*c2.imag)/(c2.real*c2.real+c2.imag*c2.imag); return c;void Complex:display()cout(real,imagi)endl;int main()Complex c1(3,4),c2(5,-10),c3;c3=c1+c2;coutc1+c2=;c3.display();c3=c1-c2;coutc1-c2=;c3.displ

43、ay();c3=c1*c2;coutc1*c2=;c3.display();c3=c1/c2;coutc1/c2=;c3.display();return 0;#include / 用 VC+ 时改为： #include using namespace std;/ 用 VC+ 时为取消此行class Complexpublic:Complex()real=0;imag=0;Complex(double r,double i)real=r;imag=i;Complex operator+(Complex &c2);Complex operator+(int &i);friend Complex

44、operator+(int&,Complex &);void display();private:double real;double imag;Complex Complex:operator+(Complex &c)return Complex(real+c.real,imag+c.imag);Complex Complex:operator+(int &i)return Complex(real+i,imag);void Complex:display()cout(real,imagi)endl;Complex operator+(int &i,Complex &c)return Com

45、plex(i+c.real,c.imag);int main()Complex c1(3,4),c2(5,-10),c3;int i=5;c3=c1+c2;coutc1+c2=;c3.display();c3=i+c1;couti+c1=;c3.display();c3=c1+i;coutc1+i=;c3.display();return 0;4:#include using namespace std;class Matrixpublic:Matrix();friend Matrix operator+(Matrix &,Matrix &);void input();void display

46、();private:int mat23;Matrix:Matrix()for(int i=0;i2;i+)for(int j=0;j3;j+)mati j=0;Matrix operator+(Matrix &a,Matrix &b)/ 定义 Matrix 类/ 默认构造函数/ 重载运算符“+/ 输入数据函数/ 输出数据函数/ 定义构造函数/ 定义重载运算符“+ ”函数Matrix c;for(int i=0;i2;i+)for(int j=0;j3;j+)c.mati j=a.mati j+b.matij;return c;void Matrix:input()/ 定义输入数据函数cout

47、input value of matrix:endl;for(int i=0;i2;i+)for(int j=0;jmati j;void Matrix:display()/ 定义输出数据函数for (int i=0;i2;i+)for(int j=0;j3;j+)coutmatij ;coutendl; int main()Matrix a,b,c;a.input();b.input();coutendlMatrix a:endl;a.display();coutendlMatrix b:endl;b.display();c=a+b;/ 用重载运算符“ + ” 实现两个矩阵相加coutend

48、lMatrix c = Matrix a + Matrix b :endl;c.display();return 0;#include /using namespace std;class Matrixpublic:Matrix();friend Matrix operator+(Matrix &,Matrix &);friend ostream& operator(istream&,Matrix&);private:int mat23;Matrix:Matrix()for(int i=0;i2;i+)for(int j=0;j3;j+)mati j=0;Matrix operator+(Ma

49、trix &a,Matrix &b)Matrix c;for(int i=0;i2;i+)for(int j=0;j(istream &in,Matrix &m)coutinput value of matrix:endl;for(int i=0;i2;i+)for(int j=0;jm.matij;return in;精品精品- - 可编辑 -精品精品-可编辑-ostream& operator(ostream &out,Matrix &m)for (int i=0;i2;i+)for(int j=0;j3;j+)outm.matij ;outa;cinb;coutendlMatrix a:

50、endlaendl;coutendlMatrix b:endlbendl;c=a+b;coutendlMatrix c = Matrix a + Matrix b :endlcendl;return 0;#include using namespace std;class Complexpublic:Complex()real=0;imag=0;Complex(double r)real=r;imag=0;Complex(double r,double i)real=r;imag=i;operator double()return real;void display();private:dou

51、ble real;double imag;void Complex:display()cout(real, imag)endl;int main()Complex c1(3,4),c2;double d1;d1=2.5+c1;coutd1=d1endl;c2=Complex(d1);coutc2=;c2.display();return 0;#include using namespace std;class Studentpublic:Student(int,char,char,float);int get_num()return num;char * get_name()return na

52、me;char get_sex()return sex;void display()coutnum:numnname:namensex:sexnscore:scorenn;private:int num;char name20;char sex;float score;Student:Student(int n,char nam,char s,float so)num=n;strcpy(name,nam);sex=s;score=so;class Teacherpublic:Teacher()Teacher(Student&);Teacher(int n,char nam,char sex,f

53、loat pay);void display();private:int num;char name20;char sex;float pay;Teacher:Teacher(int n,char nam,char s,float p)num=n;strcpy(name,nam);sex=s;pay=p;Teacher:Teacher(Student& stud)num=stud.get_num();strcpy(name,stud.get_name();sex=stud.get_sex();pay=1500;void Teacher:display()coutnum:numnname:nam

54、ensex:sexnpay:paynn;int main()Teacher teacher1(10001,Li,f,1234.5),teacher2;Student student1(20010,Wang,m,89.5);coutstudent1:endl;student1.display();teacher2=Teacher(student1);coutteacher2:endl;teacher2.display();return 0;第五章#include using namespace std;class Studentpublic:void get_value()cinnumnames

55、ex;void display( )coutnum: numendl;coutname: nameendl;coutsex: sexageaddr;/ 引用派生类的私有成员，正确。/ 引用派生类的私有成员，正确。/ 引用派生类的私有成员，正确。 coutage: ageendl;coutaddress: addrendl;private:int age;char addr30;int main()Student1 stud1;stud1.get_value_1();stud1.display();stud1.display_1();return 0;#include using namespa

56、ce std;class Studentpublic:void get_value()cinnumnamesex;void display( )coutnum: numendl;coutname: nameendl;coutsex: sexageaddr;void display_1()/ 引用派生类的私有成员，正确。/ 引用派生类的私有成员，正确。/ 引用派生类的私有成员，正确。coutage: ageendl;coutaddress: addrendl;private:int age;char addr30;精品精品- - 可编辑 -精品精品void Student:display( )v

57、oid Student:display( )- 可编辑 -int main()Student1 stud1;stud1.get_value_1();stud1.display_1();return 0;#include / 声明基类/ 声明基类/ 基类公用成员/ 基类保护成员class Studentpublic:void get_value();void display( );protected :int num;char name10;char sex;void Student:get_value()cinnumnamesex;coutnum: numendl;coutname: name

58、endl;coutsex: sexageaddr;void Student1:display1( )coutnum: numendl;coutname: nameendl;coutsex: sexendl;/ 声明一个保护派生类/ / 声明一个保护派生类/ 引用基类的保护成员/ 引用基类的保护成员/ 引用基类的保护成员/ 引用派生类的私有成员精品coutaddress: addrendl;精品coutaddress: addrendl;/ 引用派生类的私有成员void Student:get_value()- void Student:get_value()- 可编辑 -int main( )

59、Student1 stud1;/stud1 是派生类student1 类的对象stud1.get_value_1();/ 调用派生类对象stud1 的公用成员函数stud1.display1( );/ 调用派生类对象stud1 的公用成员函数return 0;4: 解法一#include using namespace std;class Student/ 声明基类public:/ 基类公用成员void get_value();void display( );protected :/ 基类保护成员;int num;char name10;char sex;精品精品- - 可编辑 -cinnum

60、namesex;void Student:display( )coutnum: numendl;coutname: nameendl;coutsex: sexageaddr;void Student1:display1( )coutnum: numendl;/ 引用基类的保护成员，合法coutname: nameendl;/ 引用基类的保护成员，合法coutsex: sexendl;coutage: ageendl;coutaddress: addrendl;int main( )Student1 stud1;stud1.get_value_1();get_value_1stud1.displ