c++部分程序.doc

变量引用，3个变量排序#includeusing namespace std;int main()void sort(int &,int &,int &);int a,b,c;coutabc;sort(a,b,c);couta b cy)int temp;temp=x;x=y;y=temp;void sort(int &i,int &j,int &k) change(i,j); change(i,k); change(j,k);五个字符串排序：#include#includeusing 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+)for(i=0;isi+1)t=si;si=si+1;si+1=t;重载函数n个数排序：#include using namespace std;int main() long a5=10100,-123567,1198783,-165654,3456;int c5=1,9,0,23,-45; double b5=2.4,7.6,5.5,6.6,-2.3; void sort(int ); void sort(long ); void sort(double ); sort(a); sort(b); sort(c); return 0;void sort(long a)int i,j;long t; for(i=0;i5;i+) for (j=0;jaj+1) t=aj; aj=aj+1;aj+1=t; coutthe sorted numbers :endl; for(i=0;i5;i+) coutai ; coutendlendl;void sort(int a)int i,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(double a)int i,j;double 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;求长方柱体积：#includeusing namespace std;class Vpublic:void set_v();void show_v();private :double length;double width;double height;void V:set_v()cinlength;cinwidth;cinheight;void V:show_v()coutV=length*width*heightendl;int main()cout 请输入3组数每组数均为长方柱的长宽高：endl;V v1;v1.set_v();v1.show_v();V v2;v2.set_v();v2.show_v();V v3;v3.set_v();v3.show_v();return 0;对象数组，输出5个学生成绩最高者：#include using namespace std;class Studentpublic:Student(int num,float sco):number(num),score(sco)int number;float score;int main()Student stu5=Student(1001,97),Student(1002,95),Student(1003,98),Student(1004,90),Student(1005,94),;void max(Student*stu);Student *MAX=&stu0;max(MAX);return 0;void max(Student*stu)int i,k=0;float max=stu0.score;for(i=1;imax)max=stui.score;k=i;cout得分最高者学号:stuk.numberendl;商店销售商品：#includeusing namespace std;class Storepublic:Store( int N,int Q,float P):num(N),quantity(Q),price(P)void total();static double average();static void display();private:static int n;static double discout;static double sum;int num;int quantity;float price;void Store:total()double disc=1.0;if (n10) disc=discout;sum=sum+quantity*disc*price;n=n+quantity;double Store:average()return(sum/n);void Store:display()cout总销售款sumendl;cout平均售价average()endl;int Store:n=0;double Store:sum=0;double Store:discout=0.98;int main()Store sto3= Store(101,5,23.5),Store(102,12,24.56),Store(103,100,21.5),;for(int i=0;i3;i+)stoi.total();Store:display();return 0;数组相加：#include using namespace std;class Matrix public: Matrix(); friend Matrix operator + (Matrix &,Matrix & ); void input(); void display();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; return c;void Matrix : input ()coutinput 2*3 matrix:endl; for ( int i = 0; i 2; i + ) for ( int j = 0; jmatij;void Matrix:display() for ( int i = 0; i 2; i + ) for ( int j = 0; j3; j + )coutmatij ;coutendl; int main ( )Matrix a,b,c;coutMatrix a and Matrix bendl;a.input();b.input();coutendlMatrix a:endl;a.display();coutendlMatrix b:endl;b.display();c=a+b;coutendlMatrix c=Matrix a + Matrix b:endl;c.display(); return 0;多重继承：# include# include using namespace std;class Personpublic:Person(string nam,int a,char s,string ad,string ph)name=nam;age=a;sex=s;addr=ad;phone=ph;protected:string name;int age;char sex;string addr;string phone;class Teacher:virtual public Personpublic:Teacher(string nam,int a,char s,string ad,string ph,string t):Person(nam,a,s,ad,ph)title=t;void display();protected:string title;void Teacher:display()coutname:nameendl;coutage:ageendl;coutsex:sexendl;couttitle:titleendl;coutaddress:addrendl;coutphone:phoneendl;class Cadre:virtual public Personpublic:Cadre(string nam,int a,char s,string ad,string ph,string p):Person(nam,a,s,ad,ph),post(p)protected:string post;class Teacher_Cadre:public Teacher,public Cadrepublic:Teacher_Cadre(string nam,int a,char s,string ad,string ph,string t,string p,float w):Person(nam,a,s,ad,ph),Teacher(nam,a,s,ad,ph,t),Cadre(nam,a,s,ad,ph,p),wages(w)void show();private:float wages;void Teacher_Cadre:show()display();coutpost:postendl;coutwages:wages per monthendl;int main()Teacher_Cadre t_c(Wang-li,24,f,2888 Xincheng Road,Changchun,+86-0431-84510*,Professor,Headmaster,80000);t_c.show();return 0;修改教授生日：#include#includeusing namespace std;class Teacherpublic:Teacher(int n,string nam,char s):num(n),name(nam),sex(s)void displayT()coutnum:numendl;coutname:nameendl;coutsex:sexendl;protected:int num;string name;char sex;class BirthDatepublic:BirthDate(int y,int m,int d):year(y),month(m),day(d)void displayB()coutyear/month/dayendl;void change(int,int,int);protected:int year;int month;int day;void BirthDate:change(int y,int m,int d)year=y;month=m;day=d;class Professor:public Teacherpublic:Professor(int n,string nam, char s,string ad,int y,int m,int d):Teacher(n,nam,s),addr(ad),birthday(y,m,d)void show()Teacher:displayT();coutaddress:addrendl;coutthe birthday is:;birthday.displayB();void change(int,int,int);private:string addr;BirthDate birthday;void Professor:change(int y,int m,int d)birthday.change(y,m,d);int main()Professor prof1(120932,TanHaoqiang,m,Jilin Changchun,1991,9,10);prof1.show();prof1.change(1991,10,21);prof1.show();return 0;抽象类SHAPE：#include#include#includeusing namespace std;class Shapepublic:virtual float area() constreturn 0.0;virtual void display() const =0;class Circle:public Shapepublic:Circle(float r=0);/void setRadius(float);float getRadius()const;virtual float area()const;virtual void display()constcoutCircle:nredius=getRadius()narea=area()endl;void display();protected:float radius;Circle:Circle(float r):radius(r)/void Circle:setRadius(float r)radius=r;float Circle:getRadius()constreturn radius;float Circle:area()constreturn 3.14159*radius*radius;class Square:public Shapepublic:Square(float b=0);/void setBorder(float);float getBorder()const;virtual float area()const;virtual void display()constcoutSquare:nborder=getBorder()narea=area()endl;protected:float border;Square:Square(float b):border(b)/void Square:setBorder(float b)border=b;float Square:getBorder()constreturn border;float Square:area()constreturn border*border;class Rectangle:public Shapepublic:Rectangle(float l=0,float b=0);/void setRectangle(float,float);float getRectangleL()const;float getRectangleB()const;virtual float area()const;virtual void display()constcoutRectangle:nchang=getRectangleL()nkuan=getRectangleB()narea=area()endl;protected:float length;float breadth;Rectangle:Rectangle(float l,float b)length=l,breadth=b;/void Rectangle:setRectangle(float l,float b)length=l,breadth=b;float Rectangle:getRectangleL()constreturn length;float Rectangle:getRectangleB()constreturn breadth;float Rectangle:area()constreturn length*breadth;class Trapezoid:public Shapepublic:Trapezoid(float ub=0,float db=0,float h=0);/void setTrapezoid(float,float,float);float getTrapezoidUB()const;float getTrapezoidDB()const;float getTrapezoidH()const;virtual float area()const;virtual void display()constcoutTrapezoid:nshangdi=getTrapezoidUB()nxiadi=getTrapezoidDB()ngao=getTrapezoidH()narea=area()endl;protected:float upbottom;float downbottom;float height;Trapezoid:Trapezoid(float ub,float db,float h):upbottom(ub),downbottom(db),height(h)/void Trapezoid:setTrapezoid(float ub,float db,float h)upbottom=ub,downbottom=db,height=h;float Trapezoid:getTrapezoidUB()constreturn upbottom;float Trapezoid:getTrapezoidDB()constreturn downbottom;float Trapezoid:getTrapezoidH()constreturn height;float Trapezoid:area()constreturn height*(upbottom+downbottom)*1/2;class Triangle:public Shapepublic:Triangle(float fb=0,float sb=0,float tb=0);/void setTriangle(float,float,float);float getTriangleFB()const;float getTriangleSB()const;float getTriangleTB()const;virtual float area()const;virtual void display()constcoutTriangle:nyibian=getTriangleFB()nerbian=getTriangleSB()nsanbian=getTriangleTB()narea=area()endl;protected:float firstborder;float secendborder; float thirdborder;Triangle:Trian