08092面向对象程序设计双语卷计科081

1、。装。订。线。2008 年2009 年第二学期 面象程序设计（双语）期末试题A 卷计科 081-2 班时间共 120 分钟说明：尽量用英文答题，用中文答题酌情扣分一、Describe conceptions and give exles (每小题 10 分，共 20 分)1.Describe the definition(定义) of Overloading Function Names(重载函数名). Please give anexle.2.Describe the definition of Dynamic Variables (动态变量). Please give an exle to

2、 create adynamic variable of type.得分阅卷人题 号一二三四五六总分得 分阅卷人二、Rerograms, and give the results（每小题 10 分，共 30 分）1. What is the output produced by the following program.#includeusing namespatd;void func(double test)throw ( main()trycoutTrying.n; func(95););coutTryingafter call.n;catch()coutCatching.n;coutE

3、nd of program.n; return 0;void func(double test) throw ()coutStarting function.n; if(test100)throw 42;2. What is the output produced by the following program.#includeusing namespatd;void figure_me_out( main()a,b,c; a=10; b=20; c=30;& x,y,& z);figure_me_out(a,b,c);couta return 0;bc;void figure_me_out

4、(& x,y,& z)coutx x=1;y=2; z=3;coutxyzendl;zendl;得分阅卷人Consider the following code:3.string s1,s2(“o”);couts1;if(s1= =s2) cout”Equaln”;elsecout”Not equaln”;If the dialogue begins as follows, what will be the next line of output?三、Programming （每小题 10 分，共 50 分）1.Write a complete(完整) C+ programt readswo

5、whole numbers of type double andoutputs their sum. Be sure to prompt(提示) for input, echo input, and label all output.得分阅卷人Enter a line of input:o friend!2.Write a definition for a void function called to_screen. The function to_screen has one formal parameter called file_stream, which is of type ifs

6、tream. The precondition(前提条件) andtcondition(后置条件) for the function are as follows：/Precondition: The stream file_stream has been connected to a file with a call to the member/function open. The file contains a list ofegers (and nothing else)./tcondition: The numbershe file connected to file_stream h

7、ave been written to the screenone per line. (This function does not close the file)3.There are two files of text(文本文件): “infile1.txt” and “infile2.txt”. Please concatenate(连接)the contents of the two files to a new file (“infile3.txt”).4. According to the following test program, define and implement

8、a class which can use the following program to test it.#includeusing namespa main()n=6;string s=”td;o”;Exam a(n,s);a.pr();/在屏幕上输出：number=6, words=oreturn 0;5.There is a base class Student as follows:class Studentpublic:Student(string no,string name); Student();void show_infor();protected:string stu_

9、no; string stu_name;void Student:show_infor()/代码略，功能是在屏幕上输出学生的学号、/其他函数实现略 Please give the definition and implemenion for a class Computer_stut is a derived classof Student. The class Computer_stu should have two additional data fields, depart,t is of typestring, and score,t is of type double. The class also should have suitable constructors（构造函数）. Redefine the function show_infor to show all of the information of the class. Write a test program to create