1、第八章 #include <iostream> using namespace std; class Time public: /成員改為公用的 int hour; int minute; int sec; ; Time t; void set_time(void) /在 main 函數(shù)之前定義 cin>>t.hour; cin>>t.minute; cin>>t.sec; void show_time(void) /在 main 函數(shù)之前定義 cout<<t.hour<<":"<<t.mi

2、nute<<":"<<t.sec<<endl; int main() set_time(); show_time(); return 0; 8.2 題 #include <iostream> using namespace std; class Time public: void set_time(void) cin>>hour; cin>>minute; cin>>sec; void show_time(void) cout<<hour<<":"

3、<<minute<<":"<<sec<<endl; private: int hour; int minute; int sec; ; Time t; int main() t.set_time(); t.show_time(); return 0; 8.3 題 #include <iostream> using namespace std; class Time public: void set_time(void); void show_time(void); private: int hour; int mi

4、nute; int sec; ; void Time:set_time(void) cin>>hour; cin>>minute; cin>>sec; void Time:show_time(void) cout<<hour<<":"<<minute<<":"<<sec<<endl; Time t; int main() t.set_time(); t.show_time(); return 0; 8.4 題 /xt8-4.h(student.h)

5、 class Student public: void display( ); void set_value(); private: int num; char name20; char sex ; ; 8.4 題 /xt8-4-1.cpp(main.cpp) #include <iostream> using namespace std; #include "xt8-4.h" int main() Student stud; stud.set_value(); stud.display(); return 0; 8.4 題另一解 /xt8-4-2.cpp(即

6、student.cpp) #include "xt8-4.h" /在此文件中進(jìn)行函數(shù)的定義 #include <iostream> using namespace std; /不要漏寫此行 void Student:display( ) cout<<"num:"<<num<<endl; cout<<"name:"<<name<<endl; cout<<"sex:"<<sex<<endl; void

7、 Student:set_value() cin>>num; cin>>name; cin>>sex; 8.5 題 /xt8-5.h(arraymax.h) class Array_max public: void set_value(); void max_value(); void show_value(); private: int array10; int max; ; 8.5 題 /xt8-5-1.cpp(file1.cpp) #include <iostream> #include "xt8-5.h" int ma

8、in() Array_max arrmax; arrmax.set_value(); arrmax.max_value(); arrmax.show_value(); return 0; 8.5 題 /xt8-5-2.cpp(arraymax.cpp) #include <iostream> using namespace std; #include "xt8-5.h" void Array_max:set_value() int i; for (i=0;i<10;i+) cin>>arrayi; void Array_max:max_valu

9、e() int i; max=array0; for (i=1;i<10;i+) if(arrayi>max) max=arrayi; void Array_max:show_value() cout<<"max="<<max<<endl; 8.6 題 #include <iostream> using namespace std; class Box public: void get_value(); float volume(); void display(); public: float lengh; flo

10、at width; float height; ; void Box:get_value() cout<<"please input lengh, width,height:" cin>>lengh; cin>>width; cin>>height; float Box:volume() return(lengh*width*height); void Box:display() cout<<volume()<<endl; int main() Box box1,box2,box3; box1.get_

11、value(); cout<<"volmue of bax1 is " box1.display(); box2.get_value(); cout<<"volmue of bax2 is " box2.display(); box3.get_value(); cout<<"volmue of bax3 is " box3.display(); return 0; 8.6 題另一解 #include <iostream> using namespace std; class Box pu

12、blic: void get_value(); void volume(); void display(); public: float lengh; float width; float height; float vol; ; void Box:get_value() cout<<"please input lengh, width,height:" cin>>lengh; cin>>width; cin>>height; void Box:volume() vol=lengh*width*height; void Box

13、:display() cout<<vol<<endl; int main() Box box1,box2,box3; box1.get_value(); box1.volume(); cout<<"volmue of bax1 is " box1.display(); box2.get_value(); box2.volume(); cout<<"volmue of bax2 is " box2.display(); box3.get_value(); box3.volume(); cout<<

14、"volmue of bax3 is " box3.display(); return 0; 9.2 題 #include <iostream> using namespace std; class Date public: 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:Dat

15、e(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=2005; void Date:display() cout<<month<<"/"<<day<<"/"<<year<<endl; int main() Date d1(10,13,2005); Date d2(12,30); Date d3(10)

16、; Date d4; d1.display(); d2.display(); d3.display(); d4.display(); return 0; 9.3 題 #include <iostream> using namespace std; class Date public: Date(int=1,int=1,int=2005); void display(); private: int month; int day; int year; ; Date:Date(int m,int d,int y):month(m),day(d),year(y) void Date:dis

17、play() cout<<month<<"/"<<day<<"/"<<year<<endl; 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; 9.4 題 #include <iostream> using namespace std; class St

18、udent public: Student(int n,float s):num(n),score(s) void display(); private: int num; float score; ; void Student:display() cout<<num<<" "<<score<<endl; int main() Student stud5= Student(101,78.5),Student(102,85.5),Student(103,98.5), Student(104,100.0),Student(105,

19、95.5); Student *p=stud; for(int i=0;i<=2;p=p+2,i+) p->display(); return 0; 9.5 題 #include <iostream> using namespace std; class Student public: Student(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),

20、 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;i<5;i+) if(arri.score>max_score) max_score=arri.score;k=i; cout<<arrk.num<<" "<<max_score<<endl;

21、9.6 題 #include <iostream> using namespace std; class Student public: Student(int n,float s):num(n),score(s) void change(int n,float s) num=n;score=s; void display()cout<<num<<" "<<score<<endl; private: int num; float score; ; int main() Student stud(101,78.5);

22、 stud.display(); stud.change(101,80.5); stud.display(); return 0; 9.7 題 #include <iostream> using namespace std; class Student public: Student(int n,float s):num(n),score(s) void change(int n,float s) num=n;score=s; void display() cout<<num<<" "<<score<<endl;

23、/ 可改為 :void display() const cout<<num<<" "<<score<<endl; private: int num; float score; ; int main() const Student stud(101,78.5); stud.display(); /stud.change(101,80.5); stud.display(); return 0; 9.7 題另一解 #include <iostream> using namespace std; class Student

24、 public: Student(int n,float s):num(n),score(s) void change(int n,float s) const num=n;score=s; void display() const cout<<num<<" "<<score<<endl; private: mutable int num; mutable float score; ; int main() const Student stud(101,78.5); stud.display(); stud.change(10

25、1,80.5); stud.display(); return 0; 9.7 題另一解 Student(int n,float s):num(n),score(s) void change(int n,float s) num=n;score=s; void display() cout<<num<<" "<<score<<endl; private: int num; float score; ; int main() Student stud(101,78.5); Student *p=&stud; p->d

26、isplay(); p->change(101,80.5); p->display(); return 0; A Student(int n,float s):num(n),score(s) void change(int n,float s) num=n;score=s; void display() cout<<num<<" "<<score<<endl; private: mutable int num; mutable float score; ; int main() Student stud(101,7

27、8.5); const Student *p=&stud; p->display(); p->change(101,80.5); p->display(); return 0; B Student(int n,float s):num(n),score(s) void change(int n,float s) num=n;score=s; void display() constcout<<num<<" "<<score<<endl; private: int num; float score; ;

28、 int main() Student stud(101,78.5); const Student *p=&stud; p->display(); stud.change(101,80.5); p->display(); return 0; Student(int n,float s):num(n),score(s) void change(int n,float s) num=n;score=s; void display() cout<<num<<" "<<score<<endl; private: i

29、nt num; float score; ; int main() Student stud(101,78.5); Student * const p=&stud; p->display(); p->change(101,80.5); p->display(); return 0; 9.8 題 Student(int n,float s):num(n),score(s) void change(int n,float s) num=n;score=s; void display() cout<<num<<" "<<

30、;score<<endl; 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(); stu.change(101,80.5); stu.display(); 9.9 題 #include <iostream> using namespace std; class Product public: Product(int n

31、,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 Product:total() float rate=1.0; if(quantity>10) rate=0.98*rate; sum=sum+quantity*pri

32、ce*rate*(1-discount); n=n+quantity; void Product:display() cout<<sum<<endl; cout<<average()<<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(101,5,23.5),Product(102,12,24.56),Pro

33、duct(103,100,21.5) ; for(int i=0;i<3;i+) Prodi.total(); Product:display(); return 0; 9.10 題 #include <iostream> using namespace std; class Date; class Time public: Time(int,int,int); friend void display(const Date &,const Time &); private: int hour; int minute; int sec; ; Time:Time(

34、int h,int m,int s) hour=h; minute=m; sec=s; class Date public: 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) cout<<d.mont

35、h<<"/"<<d.day<<"/"<<d.year<<endl; cout<<t.hour<<":"<<t.minute<<":"<<t.sec<<endl; int main() Time t1(10,13,56); Date d1(12,25,2004); display(d1,t1); return 0; 9.11 題 #include <iostream> usi

36、ng namespace std; class Time; class Date public: 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 Time public: Time(int,int,int); void display(const Date &); private: int hour; int minute; int sec; ; Time:Time(int

37、 h,int m,int s):hour(h),minute(m),sec(s) void Time:display(const Date &d) cout<<d.month<<"/"<<d.day<<"/"<<d.year<<endl; cout<<hour<<":"<<minute<<":"<<sec<<endl; int main() Time t1(10,1

38、3,56); Date d1(12,25,2004); t1.display(d1); return 0; 9.12 題 #include <iostream> using namespace std; template<class numtype> class Compare public: Compare(numtype a,numtype b); numtype max(); numtype min(); private: numtype x,y; ; template <class numtype> Compare<numtype>:Co

39、mpare(numtype a,numtype b) x=a;y=b; template <class numtype> numtype Compare<numtype>:max() return (x>y)?x:y; template <class numtype> numtype Compare<numtype>:min() return (x<y)?x:y; int main() Compare<int> cmp1(3,7); cout<<cmp1.max()<<" is the M

40、aximum of two integer numbers."<<endl; cout<<cmp1.min()<<" is the Minimum of two integer numbers."<<endl<<endl; Compare<float> cmp2(45.78,93.6); cout<<cmp2.max()<<" is the Maximum of two float numbers."<<endl; cout<<

41、;cmp2.min()<<" is the Minimum of two float numbers."<<endl<<endl; Compare<char> cmp3('a','A'); cout<<cmp3.max()<<" characters."<<endl; is the Maximum of two cout<<cmp3.min()<<" is the Minimum of two charac

42、ters."<<endl; return 0; 10.1 題 #include <iostream> using namespace std; class Complex public: 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

43、real; double Complex:get_imag() return imag; void Complex:display() cout<<"("<<real<<","<<imag<<"i)"<<endl; Complex operator + (Complex &c1,Complex &c2) return Complex(c1.get_real()+c2.get_real(),c1.get_imag()+c2.ge t_imag();

44、int main() Complex c1(3,4),c2(5,-10),c3; c3=c1+c2; cout<<"c3=" c3.display(); return 0; 10.2 題 #include <iostream> using namespace std; class Complex public: Complex()real=0;imag=0; Complex(double r,double i)real=r;imag=i; Complex operator+(Complex &c2); Complex operator-(Co

45、mplex &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=real+c2.real; c.imag=imag+c2.imag; return c; Complex Complex:operator-(Complex &c2) Complex c;

46、 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) Complex c; c.real=(real*c2.real+imag*c2.imag)/(c2.real*c2.real+c2.i mag*

47、c2.imag); c.imag=(imag*c2.real-real*c2.imag)/(c2.real*c2.real+c2.i mag*c2.imag); return c; void Complex:display() cout<<"("<<real<<","<<imag<<"i)"<<endl; int main() Complex c1(3,4),c2(5,-10),c3; c3=c1+c2; cout<<"c1+c2="

48、; c3.display(); c3=c1-c2; cout<<"c1-c2=" c3.display(); c3=c1*c2; cout<<"c1*c2=" c3.display(); c3=c1/c2; cout<<"c1/c2=" c3.display(); return 0; 10.3 題 #include <iostream> /用 VC+時(shí)改為 #include <iostream.h> using namespace std; /用 VC+時(shí)為取消此行 clas

49、s Complex public: Complex()real=0;imag=0; Complex(double r,double i)real=r;imag=i; Complex operator+(Complex &c2); Complex operator+(int &i); friend Complex operator+(int&,Complex &); void display(); private: double real; double imag; ; Complex Complex:operator+(Complex &c) retur

50、n Complex(real+c.real,imag+c.imag); Complex Complex:operator+(int &i) return Complex(real+i,imag); void Complex:display() cout<<"("<<real<<","<<imag<<"i)"<<endl; Complex operator+(int &i,Complex &c) return Complex(i+c.real

51、,c.imag); int main() Complex c1(3,4),c2(5,-10),c3; int i=5; c3=c1+c2; cout<<"c1+c2=" c3.display(); c3=i+c1; cout<<"i+c1=" c3.display(); c3=c1+i; cout<<"c1+i=" c3.display(); return 0; 10.4 題 #include <iostream> using namespace std; class Matrix /定

52、義 Matrix 類 public: Matrix(); /默認(rèn)構(gòu)造函數(shù) friend Matrix operator+(Matrix &,Matrix &); /重載運(yùn)算符“+” void input(); /輸入數(shù)據(jù)函數(shù) void display(); / 輸出數(shù)據(jù)函數(shù) private: int mat23; ; Matrix:Matrix() /定義構(gòu)造函數(shù) for(int i=0;i<2;i+) for(int j=0;j<3;j+) matij=0; Matrix operator+(Matrix &a,Matrix &b) /定義重載運(yùn)算

53、符“+” 函數(shù) Matrix c; for(int i=0;i<2;i+) for(int j=0;j<3;j+) c.matij=a.matij+b.matij; return c; void Matrix:input() / 定義輸入數(shù)據(jù)函數(shù) cout<<"input value of matrix:"<<endl; for(int i=0;i<2;i+) for(int j=0;j<3;j+) cin>>matij; void Matrix:display() /定義輸出數(shù)據(jù)函數(shù) for (int i=0;i

54、<2;i+) for(int j=0;j<3;j+) cout<<matij<<" " cout<<endl; int main() Matrix a,b,c; a.input(); b.input(); cout<<endl<<"Matrix a:"<<endl; a.display(); cout<<endl<<"Matrix b:"<<endl; b.display(); c=a+b; /用重載運(yùn)算符“+”實(shí)現(xiàn)

55、兩個(gè)矩陣相加 cout<<endl<<"Matrix c = Matrix a + Matrix b :"<<endl; c.display(); return 0; 10.5 題 #include <iostream.h> /using namespace std; class Matrix public: Matrix(); friend Matrix operator+(Matrix &,Matrix &); friend ostream& operator<<(ostream&

56、;,Matrix&); friend istream& operator>>(istream&,Matrix&); private: int mat23; ; Matrix:Matrix() for(int i=0;i<2;i+) for(int j=0;j<3;j+) matij=0; Matrix operator+(Matrix &a,Matrix &b) Matrix c; for(int i=0;i<2;i+) for(int j=0;j<3;j+) c.matij=a.matij+b.matij;

57、return c; istream& operator>>(istream &in,Matrix &m) cout<<"input value of matrix:"<<endl; for(int i=0;i<2;i+) for(int j=0;j<3;j+) in>>m.matij; return in; ostream& operator<<(ostream &out,Matrix &m) for (int i=0;i<2;i+) for(int

58、 j=0;j<3;j+) out<<m.matij<<" " out<<endl; return out; int main() Matrix a,b,c; cin>>a; cin>>b; cout<<endl<<"Matrix a:"<<endl<<a<<endl; cout<<endl<<"Matrix b:"<<endl<<b<<endl; c=a+b; cout<<endl<<"Matrix c = Matrix a + Ma