Cpp程序设计教材(第二版)第11-12章答案.doc

P264 1#include #includeusing namespace std;class Personchar Name20;char Sex;int Age;public:Person(char *name,int age,char sex)strcpy(Name,name);Age=age;Sex=(sex=m?m:f);coutconstructor of TeacherNametAgetSex;Person()coutdeconstrucor of teacherendl;class Teacher: public Personchar Prof10,Posit10,Less10;public:Teacher(char *name,int age,char sex,char *prof,char *posit,char *less):Person(name,age,sex)strcpy(Prof,prof);strcpy(Posit,posit);strcpy(Less,less);couttProftPosittLessendl;Teacher();int main()Teacher tea(,18,m,);return 0;P264 2#include #includeusing namespace std;class Personpublic:char Name20;char Sex;int Age;public:void Register(char *name,int age,char sex)strcpy(Name,name);Age=age;Sex=(sex=m?m:f);void showMe()couttNametAgetSext;class Student: public Personint Number;char ClassName10;public:void Register(char *classname,int number,char *name,int age,char sex)strcpy(ClassName,classname);Number=number;Person:Register(name,age,sex);void ShowMe()coutNumbertClassNamet;Person:showMe();class Teacher: public Personpublic:char Prof10,Posit10,Less10;public:void Register(char *name,int age,char sex,char *prof,char *posit,char *less)strcpy(Prof,prof);strcpy(Posit,posit);strcpy(Less,less);Person:Register(name,age,sex);void ShowMe()coutProftPosittLesst;class postgraduate:public Student,public Teacherpublic:void Register(char *classname,int number,char *name,int age,char sex,char *prof,char *posit,char *less)Student:Register(classname,number,name,age,sex);Teacher:Register(name,age,sex,prof,posit,less);void ShowMe()Student:ShowMe();Teacher:ShowMe();int main()Person p1;Student student;Teacher teacher;p1.Register(,18,m);p1.showMe();student.Register(1,7061,18,m);student.ShowMe();teacher.Register(,18,m,yanjiu,);teacher.ShowMe();postgraduate tea;tea.Register(1,7061,18,m,yanjiu,);tea.ShowMe();return 0;P264 3#include#include class Pointpublic:double x,y;public:Point(int =0,int =0);void SetPoint(int ,int );double GetX()return x;double GetY()return y;void Print();Point:Point(int a,int b)SetPoint(a,b);void Point:SetPoint(int a,int b)x=a;y=b;void Point:Print() coutx,y;class Line:public PointPoint EndPoint;double length;public:Line(int a =0,int b=0,int c=0,int d =0):Point(a,b),EndPoint(c,d);double Area()return sqrt(y-EndPoint.y)*(y-EndPoint.y)+(x-EndPoint.x)*(x-EndPoint.x);void Print()coutPoint=;Point:Point();cout=0?r:0);double Circle:GetRadius()return radius;double Circle:Area()return 3.14159*radius*radius;void Circle:Print()coutCenter=;Point:Point();cout;radius=radiusendl;int main()Point p1;Circle c(120,80,10.0);coutPoint p1:;p1.Print();coutnCircle c:;c.Print();coutthe center of circle c:;c.Point:Print();coutnthe area of circle c:c.Area()endl;Line line(0,0,3,4);coutLine:;line.Print();coutn the length :line.Area()endl;return 0;P289 1#include #includeusing namespace std;class Basepublic:virtual void display()coutYYYYYYYYendl;class FirstB:public Basepublic:void display()couthuhuhuhuhuendl;class SecondB:public Basevoid display()couthahahadisplay();ptr=&f1;ptr-display();ptr=&s1;ptr-display();return 0;P289 2#include using namespace std;class Shapepublic:virtual double Area()constreturn 0.0;virtual void PrintShapeName() const=0;virtual void Print() const =0;class Point:public Shapeint x,y;public:Point(int=0,int=0);void SetPoint(int,int);int GetX()return x;int GetY()return y;virtual void PrintShapeName()const coutPoint:;virtual void Print() const;Point:Point(int a,int b)SetPoint(a,b);void Point:SetPoint(int a,int b)x=a;y=b;void Point:Print()constcoutx,y;class Circle:public Pointdouble radius;public:Circle(int x=0,int y=0,double r=0.0);void SetRadius(double);double GetRadius()constreturn radius;double Area()const;void Print()const;void PrintShapeName()constcout=0?r:0);double Circle:Area()constreturn 3.14159*radius*radius;void Circle:Print()constcoutCenter=;Point:Print();cout;radius=radiusendl;class Rectangle:public Pointdouble length,width;public:Rectangle(int x=0,int y=0,double l=0.0,double w=0.0);void SetLength(double);void SetWidth(double);double GetLength()const;double GetWidth()const;double Area()const;void Print()const;void PrintShapeName()constcout=0?l:0);void Rectangle:SetWidth(double w)width=(w=0?w:0);double Rectangle:GetLength()constreturn length;double Rectangle:GetWidth()constreturn width;double Rectangle:Area()constreturn length*width;void Rectangle:Print()constcoutleft Top Vertex=;Point:Print();cout;length=length,wigth=widthendl;class zfangx:public Pointdouble Length;public:zfangx(int x=0,int y=0,double L=0.0);void Setlength(double);double Getlength()const;double Area()const;void Print()const;void PrintShapeName()constcout=0?l:0);double zfangx:Getlength()constreturn Length;double zfangx:Area()constreturn 6*Length*Length;void zfangx:Print()constcoutleft Top Vertex=;Point:Print();cout;length=Lengthendl;class yuanzhu:public CircleCircle cir;double hight;public:yuanzhu(int x=0,int y=0,double c=0.0,double h=0.0);void Sethight(double);double Gethight()const;double Area()const;void Print()constcoutleft Top Vertex=;Circle:Print();cout;hight=hightendl;void PrintShapeName()constcout=0?h:0);double yuanzhu:Gethight()constreturn hight;double yuanzhu:Area()constreturn hight*cir.Area();void virtualviapointer(const Shape *baseclassptr)baseclassptr-PrintShapeName();baseclassptr-Print();coutArea=Area()endl;void virtualviareference(const Shape &baseclassptr)baseclassptr.PrintShapeName();baseclassptr.Print();coutArea=baseclassptr.Area()endl;int main()Point point(30,50);Circle circle(120,80,10.0);Rectangle rectangle(10,10,8.0,5.0);zfangx Zfangx(31,34,10.0);yuanzhu Yuanzhu(30,50,10.0,5.0);point.PrintShapeName();point.Print();coutendl;circle.PrintShapeName();circle.Print();rectangle.PrintShapeName();rectangle.Print();Shape *shape5;shape0=&point;shape1=&circle;shape2=&rectangle;shape3=&Zfangx;shape4=&Yuanzhu;for(int i=0;i5;i+)virtualviapointer(shapei);for(int j=0;j5;j+)virtualviareference(*shapej);return 0;P289 3#include #include using namespace std;class Dateint day,month,year;void IncDay();/int DayCalc() const;/static const int days;/public:Date(int y,int m,int d);/Date(int m,int d);/Date();void SystemDate();void SetDate(int yy,int mm,int dd);void SetDate(int mm,int dd);bool IsLeapYear(int yy) const;/bool IsEndofMonth() const;/void Istoday(int mm,int dd) const;void print_ymd() const;/yy_mm_ddvoid print_mdy() const;/mm_dd_yyconst Date &operator + (int days);/const Date &operator +=(int days);/int operator -(const Date& ymd) const;/add days,modify object;const int Date:days=0,31,28,31,30,31,30,31,31,30,31,30,31;Date:Date(int y,int m,int d)SetDate(y,m,d);Date:Date(int m,int d)SetDate(m,d);Date:Date()SystemDate();void Date:SystemDate()tm *gm;time_t t=time(NULL);gm=gmtime(&t);year=1900+gm-tm_year;month=gm-tm_mon+1;day=gm-tm_mday;void Date:SetDate(int yy,int mm,int dd)month=(mm=1&mm=1900&yy=1&dd=1&dd=1&mmtm_year;if(month=2&IsLeapYear(year)day=(dd=1&dd=1&dd=daysmonth)?dd:1;const Date &Date:operator + (int days)for(int i=0;idays;i+)IncDay();return *this;const Date &Date:operator += (int days)for(int i=0;itm_mon+1)&(dd=gm-tm_mday)coutHappy Birthdaygm-tm_mon+1|(mm=gm-tm_mon+1&ddgm-tm_mday)coutyour birthday havetemp-*thisdaysendl;elsetemp.year=temp.year+1;coutyour birthday havetemp-*thisdaysendl;void Date:IncDay()if(IsEndofMonth()if(month=12)day=1;month=1;year+;elseday=1;month+;else da