c程序设计第10章课后答案

1、第 10 章 习题解答判断题对的有 3,5,7,10,12,17,19,20单选题BCDAD10.3 填空题BBDAC1.2.3.4.5.6.public 派生类 protected基类 virtual基类private基类;protectedprotected子对象自身类派生子对象避免二义性派生类常成员派生类的一做数据成员10.4 程序结果1.(11,12)33,34(36,40)11,12,23,292.3.A:Constructor called. A:Constructor called. B:Constructor called. A:Constructor called. A:Co

2、nstructor called. B:Constructor called.88,01227,15B:Destructor called. A:Destructor called. A:Destructor called. B:Destructor called. A:Destructor called.4 A: Destructor called.2Constructor called.in A.3 Constructor called.in B.4 Constructor called.in C.5 Constructor called.in A.6 Constructor called

3、.in D.6 Destructor called.in D. Destructor called.in A. Destructor called.in CDestructor called.in B.4.1Destructor called.in A.5.In A con.A In B con.B In A con.C In A con. C In c con.D In C con. E In D con. E In d.In A. In C. In A. In A. In B. In B.In A con.F In B con.B In C con.D In A con. E In D c

4、on.F In D.In A. In C. In B.In A.6.10.5 编程题1.#include #include classpublic:(char *s1,char *s2)name=new charstrlen(s1)+1; strcpy(name,s1);dept=new charstrlen(s2)+1; strcpy(dept,s2);void Pr()coutName: nameendl;2coutDepartment: deptendl;protected:char *dept,*name;class Student:virtual publicpublic:Stude

5、nt(char *s1,char *s2,char *s3):grade=new charstrlen(s3)+1; strcpy(grade,s3);void Pr():Pr();coutGrade: gradeendl;protected:char *grade;class Teacher:virtual publicpublic:Teacher(char *s1,char *s2,char *s3):lesson=new charstrlen(s3)+1; strcpy(lesson,s3);void Pr():Pr();coutLessos: lessonendl;protected:

6、char *lesson;(s1,s2)(s1,s2)class StudentTeachpublic:ublic Student,public TeacherStudentTeacher(char *s1,char *s2,char *s3,char *s4,char *s5):(s1,s2),Student(s1,s2,s3),Teacher(s1,s2,s4)major=new charstrlen(s5)+1;3strcpy(major,s5);void Pr()Student:Pr();coutLessos: lessonendl; coutMajor: majorendl;priv

7、ate:char *major;void main()Student stu( Teacher tea(,计算机系,03 级);,计算机系,C+);StudentTeacher st(,计算机系,05 级,C+,数据库);stu.Pr tea.Prst.Pr();();();2.#include #include class Linepublic:Line(i)length=i; void Show()for(i(0);ilength;i+)cout-;coutendl;protected:length;class Messagepublic:Message(char *s)msg=new c

8、harstrlen(s)+1;4strcpy(msg,s);Message()delete msg; void Show()coutmsgendl; private:char *msg;class MsgLine:public Line,public Messagepublic:MsgLine(char *s):Message(s),Line(strlen(s)void Show()Message:Show();Line:Show();void main()MsgLine m(I love BEIJING!); m.Show();MsgLine mm(C+ Programming Language.); mm.Show();10.6 回答问题1.2.答：基类中不包含派生类中的成员。答：派生类的构造