面向对象的程序设计

1、中国海洋大学 20072008学年 第2学期 期末考试试卷信息科学与工程学院面向对象的程序设计课程试题(A卷)优选专业年级 学号 姓名 授课教师 座号 -装-订-线- 共3页 第1页考试说明：本课程为闭卷考试，可携带 文具(或本课程为开卷考试，可携带 文具和 资料)，满分为： 100分。 题号一二三四五六七总分得分一、（20 points）Multiple Choice1. is not a member function of a class.(A) Constructor (B) Destructor (C) Friend function2. is the earliest ancest

2、or of object-oriented programming languages.(A) C+ (B) Simula 67 (C) FORTRAN3. To assert that one class is a of another is to simply say it was built using inheritance. (A) subclass (B) subtype4. may be accessed directly through the instances of child class within the external function. (A) private

3、members in the parent class (B) protected members in the parent class (C) public members in the parent class5. To create an instance, the template argument must be associated with a . (A) type (B) number (C) character6. C+ has the space allocation strategy.(A) maximum static (B) minimum static (C) d

4、ynamic 7. In allocation, the amount of space required is determined at run-time .(A) stack-based (B) heap-based8. “<<” can be overloaded as function. (A) friend (B) member9. A is invoked automatically when an object is deleted.(A) constructor (B) destructor10. Overriding is resolved at time.(A

5、) run (B) compile 授课教师命题教师或命题负责人签字 年 月 日院系负责人签字年 月 日共3页 第2页二、（10 points）True/False( ) 1. Inheritance represents the has-a relationship. ( ) 2. All the member functions in the friend class are friend members for current class.( ) 3. Shadowing only occurs in the context of the parent/child relationshi

6、p.( ) 4. A type name can be used as an operator. ( ) 5. In object-oriented languages, the term polymorphism means there is one meaning and many different names.三、（16 points）Fill in the following blanks and write out the running results of function main.Suppose: (1) class Y is a private subclass of c

7、lass X;(2) class Z is a public subclass of class Y;(3) a, b and c are encapsulated data members.#include<iostream> class Xpublic: X(int x) a=x; void showX( )cout<<“a=”<<a<<endl; int a;class Y: private Xpublic: Y b=y;void showY( ) cout<<"a="<<a<<end

8、l; cout<<"b="<<b<<endl; X:showX( );private: int b;class Z: public Ypublic: Z c=z; void showZ( ) showY( ); cout<<"c="<<c<<endl;private: int c;int main( )Z obj(10, 20, 30); obj.showX( ); obj.showY( ); obj.showZ( ); return 0; 中国海洋大学 20072008学年 第2学

9、期 期末考试试卷信息科学与工程学院面向对象的程序设计课程试题(A卷)优选专业年级 学号 姓名 授课教师 座号 -装-订-线- 共3页 第3页四、（14 points）Please write out the class definitions of Student and GraduateStudent.五、（20 points） Please write out the class definitions of Shape, Cube, Sphere and draw the diagram of inheritance hierarchy.六、（20 points）Please imple

10、ment the addition of two matrices, which has 2 rows and 3 columns.中国海洋大学 20072008学年 第2学期 期末考试试卷信息科学与工程学院面向对象的程序设计课程试题(B卷)优选专业年级 学号 姓名 授课教师 座号 -装-订-线- 共3页 第1页考试说明：本课程为闭卷考试，可携带 文具(或本课程为开卷考试，可携带 文具和 资料)，满分为： 100分。 题号一二三四五六七总分得分一、（12 points）Multiple Choice1. is not a member function of a class.(A) Const

11、ructor (B) Destructor (C) Friend function2. is the earliest ancestor of object-oriented programming languages.(A) C+ (B) Simula 67 (C) FORTRAN3. is a valid identifier in C+.(A) 2006Year (B) E-mail (C) idNumber# (D) _age4. Storage for variable is allocated at block entry and destroyed at block exit.(

12、A) global (B) static (C) automatic5. may be accessed directly through the instances of child class within the external function. (A) private members in the parent class (B) protected members in the parent class (C) public members in the parent class 6. is a manipulator used to determine the number o

13、f character positions in which to display a right-justified number.(A) setw (B) setprecision (C) fixed (D) endl 二、（12 points）True/False( ) 1. Composition represents the is-a relationship. ( ) 2. If the parent class is virtual , there is only one copy in the child classes.( ) 3. Destructors can be ov

14、erloaded. ( ) 4. Shadowing only occurs in the context of the parent/child relationship. ( ) 5. Overloading is resolved at run time.( ) 6. The implementation of dynamic polymorphism relies on virtual functions.授课教师命题教师或命题负责人签字 年 月 日院系负责人签字年 月 日共3页 第2页三、（16 points）Please fill in the following blanks a

15、nd write out the running results of function main:#include<iostream>using namespace std;class Basepublic: Base(int sa) a=sa; cout<<“Constructing Base, a=”<<a<<endl;private: int a;class Base1:virtual public Basepublic: Base1(int sa,int sb): b=sb; cout<<“Constructing Base

16、1, b=”<<b<<endl;private: int b;class Base2:virtual public Basepublic: Base2(int sa,int sc): c=sc; cout<<“Constructing Base2, c=”<<c<<endl;private: int c;class Derive: public Base1, public Base2public:Derive(int sa,int sb, int sc,int sd): d=sd;cout<<“Constructing D

17、erive, d=”<<d<<endl;private: int d;int main( )Derive obj(2, 4, 6, 8); return 0;中国海洋大学 20072008学年 第2学期 期末考试试卷信息科学与工程学院面向对象的程序设计课程试题(B卷)优选专业年级 学号 姓名 授课教师 座号 -装-订-线- 共3页 第3页四、（20 points）Please implement the addition of two fractional values.五、（20 points）Please write out the class definition of PartTime _Student and draw the diagram of inheritance hierarchy.六、（20 points）Class person h