《根据UML类图写C++类定义 【精编】》由会员分享，可在线阅读，更多相关《根据UML类图写C++类定义 【精编】（68页珍藏版）》请在金锄头文库上搜索。
1、Review（复习）Contents1 概念 2 简答 3 选择 填空 改错 4 根据UML类图写C类定义根据C代码画UML类图 5 编程1 概念 对象，消息，方法，类，继承，封装， 聚集，多态性，抽象类类 友元函数，构造函数，析构函数，函数 名重载，虚函数，纯虚函数， 异常2 简答 简述C程序中类的一般结构。 在C程序中，类成员的访问权符有哪几种？ 公有派生和私有派生有什么区别？ 用成员函数和友元函数重载运算符有什么区别？ 当进行多重继承时，如果在派生类中使用不同父类的 同名成员，如何避免二义性？ C主要使用哪两个流类进行预定义类型的输入和输 出，重载了哪两个运算符？ UML类图中，如何表示
2、聚集和泛化关系？ 请列举出5种UML模型图。 3 根据UML类图写C类定义 例：UML类图类定义#include class Figureprotected:float x,y;public:void Set();virtual void ShowArea(); ; class Triangle:public Figurepublic:void ShowArea(); ;class Square: public Figurepublic:void ShowArea(); ; class Circle: public Figurepublic:void ShowArea();4 根据C代码画UM
3、L类图 例：源程序 #include class Xprotected: int a;public: void make(int i)a = i; class Yprotected: int a;public: void make(int i)a = i;class Z: public X, public Ypublic: int make()return X:a*Y:a;UML类图1. 定义一个Shape基类，在此基础上派生出Rectangle和 Circle类，二者都有GetArea()函数计算对象的面积。使 用Rectangle类创建一个派生类Square。#include class
4、Shape public:Shape ( ) ( Shape () virtual float GetArea () return - 1; ;class Circle : public Shape public:Circle (float radius ): itsRadius (radius) Circle () float GetArea() return 3.14 * itsRadius * itsRadius; private:float itsRadius; ;class Rectangle : public Shape public:Rectangle(float len, fl
5、oat width): itsLength(len), itsWidth(width) ;Rectangle () );float GetArea() return itsLength * itsWidth; float GetLength() return itsLength; )float GetWidth() return itsWidth; private:float itsWidth;float itsLength; ;class Square : public Rectangle public .Square (float len);Square () ; Square: Squa
6、re (float len): Rectangle (len,len)void main()Shape * sp;sp=new Circle (5);cout GetArea () GetArea() GetArea ()#include class Document public:Document ( ) ;Document(char * name);char * Name; / Document name.void PrintNameOf(); /Print name. ; Document: Document (char * name) Name =new charstrlen(name
7、) + 1;strcpy(Name, name); ;void Document : PrintNameOf() cout Class Counterpublic：Counter()；Counter(USHORT initialValue)；Counter()USHORT GetItsVal() const return itsVal；Void SetItsVal(USHORT x)itsValx；Counter operator+(const Counterint main()Counter varOne(2)，varTwo(4)，varThree；varThree=varOne+varTw
8、o；coutclass Mammalpublic：Mammal():itsAge(1)coutSpeak()；return 0；输出： Mammal constructor. Dog constructor. Woof ! Dog destructor. Mammal destructor.5.定义一个Shape抽象类，在此基础上派生出 Rectangle和Circle类，二者都有 GetArea()函数 计算对象的面积，GetPerim()函数计算对象的周 长。#includeclass Shapepublic：Shape()Shape()virtual float GetArea()0；v
9、irtual float GetPerim()0；class Circle：public Shape public:Circle(f1oat radius):itsRadius(radius)CIrcle()float GetArea()return 314 *itsRadius *itsRadius；float GetPerim()return 6.28 *itsRadius；private：float itsRadius；class Rectangle：public Shapepublic:Rectangle(float len，float width)：itsLength(len)， i
10、tsWidth(Width)；Rectangle()；virtualfloat GetArea()return itsLength *itsWidth；float GetPerim()return 2 *itsLength+2 *itsWidth； )virtual float GetLength()return itsLength；virtual float GetWidth()return itWidth；private：float itsWidth；float itsLength；void main()Shape *sp；spnew Circle(5)；coutGetArea()GetP
11、erim()GetArea()GerPerim() #include People:People() People:People() People:People(char *aName, Sexes aSex, int anAge) strcpy(Name,aName); Sex=aSex; Age=anAge; void People:Set(char *aName, Sexes aSex, int anAge) strcpy(Name,aName); Sex=aSex; Age=anAge; void People:ShowInfo() cout #include Student:Stud
12、ent() Student:Student() Student:Student(char *aName, Sexes aSex, int anAge, char *aNum, char *aCls):People(aName,aSex,anAge) strcpy(Num,aNum); strcpy(ClassNo,aCls); void Student:ShowInfo() People:ShowInfo(); cout #include Teacher:Teacher() Teacher:Teacher() Teacher:Teacher(char *aName, Sexes aSex, i
13、nt anAge, char *aPrin, char *aDept):People(aName,aSex,anAge) strcpy(Principalship,aPrin); strcpy(Department,aDept); void Teacher:ShowInfo() People:ShowInfo(); cout int main() People p1(“Zhang Li“,female,20); Student s1(“Wang Yong“,male,21,“987654“,“Computer9820“); Teacher t1(“Liu Hong“,female,50,“Ma
14、ster“,“Computer“); p1.ShowInfo(); cout #include “Employee.h“ #include “Manager.h“ #include “SalesMan.h“ #include “Worker.h“ int main() SalesMan s1(15, 100, 25000,10); Worker w1(10, 150, 20); Manager m1(1000, 5); cout #include char *apple:identify() sprintf(ident,“(apple:%s,%s)“,fruit:identify(),tree
15、:identify(); return ident; char *pear:identify() sprintf(ident,“(pear:%s,%s)“,fruit:identify(),tree:identify(); return ident; char *apple_pear:identify() sprintf(ident,“(apple_pear:%s,%s)“,apple:identify(),pear:identify(); return ident; int main() apple apple1; pear pear1; fruit fruit1; tree tree1; apple_pear ap1; cout #include “Base.h“ #include “ball.h“ #include “bar.h“ #include “cube.h“ int main() cube c(25); bar bar1(10,15); ball ball1(10); cout“cube cs sqare is
