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1、1实验四 继承与派生班级：软件 1002 姓名：韩晓燕 学号：201013138043 指导老师：汪老师【实验内容】设计一个用于人员管理的“people（人员） ”基类。考虑到通用性，仅只抽象出所有人员都具有的属性：编号、姓名、性别、出生日期、身份证号等；从 people 类派生出 student 类，并添加属性：班号 classno；从 people 类派生出 teacher 类，并添加属性：职务principalship、部门 department；从 student 类派生出 graduate 类，添加属性：专业 subject、导师 teacher adviser（teacher 类）
2、 ；从 graduate 类和 teacher 类派生出 TA 类。设计时注意虚基类的使用，注意重载相应的函数。测试这个类。【实验目的】1. 学习定义和使用类的继承关系，定义派生类；2. 熟悉不同继承方式下对虚基类成员的访问控制；3. 学习利用虚基类解决二义性问题。【UML 图】date-year: int-month: int-day: int+date(y: int, m: int, d: int)+show(): voidPeople-num: int-name: char *-ID: int-birth: date+People(no: int, na: char*, id: int,
3、 d: date&)+People(p: people &)People()+show(): voidstudent-classno: int+student(p: People &, n: int)+student(p: People &, s: student &)student()+show1(): voidteacher-PH: char*-DP: char*+People(p: People &, zh: char *, bu: char *)+People(p: People &, t: teacher &)teacher()+show2(): voidgraduate-sub:
4、char*-t: teacher+graduate(p: People &, s: student &, su: char *, a: teacher &)+graduate(p: people &, s: student &, g: graduate &)graduate()+show3(): voidTA+TA(p: People &, g: graduate &, t: teacher &)+TA(p: People &, g: graduate &, t: teacher, TA &)TA()+SHOW(): void2【程序清单】#includeusing namespace std
5、;class dateprivate:int year;int month;int day;public:date(int y,int m,int d):year(y),month(m),day(d)void show();void date:show()coutbirthday:;coutyear-month-dayendl;class Peoplepublic:People(int no,char *na,int id,date People(People People();void show();private:date birth;int num;char *name;int ID;v
6、oid People:show()coutnum:numendl;coutname:nameendl;birth.show();coutid:IDendl;3class student:virtual public Peoplepublic:student(People &p,int n):People(p),classno(n)student(People &p,student &s):People(p),classno(s.classno)student();void show1();private:int classno;void student:show1()show();coutcl
7、assno:classnoendl;class teacher:virtual public Peoplepublic:teacher(People &p,char *zh,char *bu):People(p),PH(zh),DP(bu)teacher(People &p,teacher &t):People(p),PH(t.PH),DP(t.DP)teacher();void show2();void show2(int);private:char *PH;char *DP;void teacher:show2()show();coutprincipalship:PHendl;coutde
8、partment:DPendl;void teacher:show2(int)coutprincipalship:PHendl;coutdepartment:DPendl;4class graduate: public studentpublic:graduate(People &p,student &s,char *su,teacher &a):People(p),student(s),sub(su),t(a)graduate(People &p,student &s,graduate &g):People(p),student(s),sub(g.sub),t(g.t)graduate();
9、void show3();private:char *sub;teacher t;void graduate:show3()show1();coutsubject: subendl;coutteacheradviser: endl;t.show2(0);class TA: public graduate, public teacherpublic:TA(People &p,graduate &g,teacher &t):People(p),graduate(g),teacher(t)TA(People &p,graduate &g,teacher &t,TA &):People(p),grad
10、uate(g),teacher(t)TA();void SHOW();void TA:SHOW()show3();int main()coutTHE INFORMATION OF PEOPLE:endl;date bir1(1990,1,2);People a(101,zhangsan,111,bir1);a.show ();coutendl;coutTHE INFORMATION OF STUDENT:endl;date bir2(1988,2,3);5People m(102,lisi,222,bir2);student b(m,1002);b.show1();coutendl;coutT
11、HE INFORMATION OF TEACHER:endl;date bir3(1986,3,5);People n(103,wangwu,333,bir3);teacher c(n,math,IT);c.show2();coutendl;coutTHE INFORMATION OF GRADUATE:endl;date bir4(1989,2,3);People t(104,fang,444,bir4);teacher tt(t,math,IT);graduate d(t,b,software,tt);d.show3();coutendl;coutTHE INFORMATION OF TA:endl;date bir5(1987,6,5);People f(105,mali,555,bir5);TA e(f,d,c) ;e.SHOW();coutendl;return 0;6【运行结果】【小结】1. 重载函数的使用使相应的同名函数实现不同的功能，从而是程序用一定的简化；2. 继承时将共同基类设置为虚继承，使从不同路径继承过来的同名数据成员在内存中就只有一个副本，同一个函数名也只有一个映射，解决了二义性问题。3. UML 图使相应的程序直观的表示出来。
