1、精選優(yōu)質(zhì)文檔-傾情為你奉上IJudgment. (The right answer is “T”, the wrong one is “F” .Each judgment is 2 points, total 20 points.)Number12345678910T/F1. Both constructor and destructor of base class can be inherited by derived class. 2. Static data member is shared by all objects of this class. 3. Constructors ca

2、n be declared as virtual function. 4. When overloading an operator, at least one argument of the resulting overloaded operator must be of a class type. 5. Constructors have no return type. 6. A friend function is not a member of the class, but it can access the private members of that class. 7. We c

3、an only list types of formal parameters in function declarations.8. There are loop statements can be wrote in the inline function.9. The assignment operator can only be overloaded into a member function. 10.In C+, STL is a standard function template library.IIFill in the blank . (Each blank is 1 poi

4、nt, total:10 points)1. The default access label for class is _.2. The constructor and the destructor must have the same as the class,.3. The member functions of derived classes can get access to _ _ members and _ members of a base class, do not get access to private members of a base class. 4. In C+

5、, a class with a pure virtual function is called an _.5. Suppose we have a class named as Dc, when such code like “Dc a5, b(2),*p;” is implemented, the system will auto-call the constructor of class Dc for _ times. 6. Statement _ can catch all kinds of exceptions. 7. In C+, in addition to “.”, “*”,

6、“sizeof”, the operator _ and _ are also cant be overload.8. Class istream is used to support input operation, and class _ is used to support output operation. IIISingle Choice (Each choice is 2 point, total:10 points)1. ( )Usually copy constructors parameter isA) the name of some object B) the refer

7、ence of some objectC) member name of some object D) the pointer of some object2. ( )Which is wrong about constructor? A) The compiler may supply default constructor.B) Constructors can have parameters, and returned value.C) Constructors can be overloaded.D) Constructors can have default parameter va

8、lue.3. ( )Which is wrong about friend?A) The keyword friend is used to declare the friend.B) The member function of one class can be the friend of another class.C) The friend functions can access any specified access label member.D) The friend functions access the member of some object by this point

9、er. 4. ( )The purpose of virtual base class is. A) to eliminate（消除）ambiguity B) to make a program simpleC) to increase the run efficiency D) to reduce the object codes5. ( )Which is right about the static data member?A) The static data member can not be called by the object name.B) The static data m

10、ember can be initialized in the constructors.C) The static data member belongs to a certain class.D) The static data member must not be initialized in the file scope.4. int x=9 , *x_ptr=&x; /L16 int y=78; /L17*x_ptr = &y ; /L18.Point out the error the following programming and explain the reason(wri

11、te out error line number, total:10points)1. const size=10; /L1int asize; /L22. class Point public: Point() c=0; x=-1; /L3 Point(Point pobj); /L4 Point(Point& p); /L5private: int x; /L6 const int c; /L7;3. #include using namespace std;class Example public: Example (int i)m=i; /L8 void Example() m=0;

12、/L9 void show()coutm; /L10 private: int m; /L11; int main( ) Example ex1; /L12Example ex2(5); /L13 ex2.m+=10; /L14 Example.show(); /L15 return 0; 4. int x=9 , *x_ptr=&x; /L16 int y=78; /L17*x_ptr = &y ; /L185. #includeusing namespace std;class BC public: void set_x(int a) x=a; /L19 protected: int ge

13、t_x() const return x; /L20 private: int x;class DC : public BC public: void add2( ) /L21 int c=get_x( ); set_x(c+2); /L22 void add3( ) x+=3; /L23;int main( ) DC d; d.set_x(3); /L24 coutd.get_x( )endl; /L25 d.x=77; /L26 d.add2(); /L27 return 0; Number/ LineReasonNumber / LineReason1/6/2/7/3/8/4/9/5/1

14、0/Write out the results of the following programs. (Each subject is 5 points; total:30 points)1. #include using namespace std;char str20=Hello C+ world.;char &rep(int k)return strk; int main( )rep(15)=!;coutThe string is:strendl;return 0;2. #include #include using namespace std;int main() double val

15、ues=1.23,35.36,657.6,778.2; char* names=Zoot,Jimmy,A1,Stan; for(int i=0;i4;i+) coutleftsetw(6)namesi rightsetw(6) fixedsetprecision(1) valuesiendl; return 0;3. #include const double PI=3.14;using namespace std;class Figure public: Figure(); virtual double area() const return 0.0;class Circle : publi

16、c Figure public: Circle(double myr)R=myr; double area() const return PI*R*R;protected: double R;class Rectangle : public Figure public: Rectangle (double myl,double myw) L=myl;W=myw;double area() const return L*W;private: double L,W;void func(Figure &p) coutp.area()endl;int main() Figure fig; coutAr

17、ea of Figure is ; func(fig);Circle c(3.0); cout“Area of circle is ”; func(c); Rectangle rec(4.0,5.0); coutArea of rectangle is ; func(rec); return 0;4. #include #include using namespace std;int main() cout“Opening data.txt for appending.”endl; ofstream fout; fout.open(“data.txt”,ios:app); if ( fout.

18、fail( ) ) cout“Input file opening failed.”endl; exit(1); fout“Hello C+ world!”endl “This is an appending program.”endl; fout.close(); cout“End of appending to file.”endl; return 0;Suppose that there is the content: “This is a test program!” in the data.txt.when the program executes, what content wil

19、l exist in the data.txt? 5. #include using namespace std;class Base1 public: Base1(int i) a=i; coutconstructing Base1 a= aendl; private:int a; ;class Base2 public: Base2(int i)b=i; coutconstructing Base2 b= bendl;private: int b;class Base3 public: Base3(int i)c=i;coutconstructing Base3 c= cendl; pri

20、vate: int c;class Derivedclass:public Base1public: Derivedclass(int i,int j,int k,int m); private: int d;Base2 f;Base3 g; ; Derivedclass:Derivedclass(int i,int j,int k,int m):Base1(i),g(j),f(k) d=m;coutconstructing Derivedclass d=dendl; int main() Derivedclass x(5,7,6,8);return 0;6. #includeusing na

21、mespace std;templateclass A T m; static T n; public: A(T a): m(a) n+=m; void disp( ) coutm=m,n=nendl; ;templateT A:n=0;int main() A a(2) , b(3); a.disp(); b.disp(); A c(1.6),d(5.4); c.disp(); d.disp(); return0;Programming Design. (total 20 points)1. (10 points) To define a Point class to satisfy the

22、 given test function main: int main()Point p1(1,2), p2;cout請輸入點p2的坐標：endl; p2.input( );p1.show( ) ; /輸出(1,2)p2.show( ) ; coutThe distance of point p1 and point p2 is p1.dist(p2)endl;return 0; 2. (10 points) To design a RMB class to satisfy the given test function main: int main() RMB m1(100,2,8), m2

23、(200,9), m; if( m1=m2) cout”兩者的錢數(shù)相等！”endl; else cout”兩者的錢數(shù)不相等！”endl; m=m1+m2; m=m+50;m.show( ); /按元角分輸出 return 0;2011 2012學(xué)年第 一 學(xué)期 C+面向?qū)ο蟪绦蛟O(shè)計 課程試卷標準答案及評分標準 A()/B( ) 卷 _專業(yè) 軟件103-5 IJudgment. (The right answer is “T”, the wrong one is “F” .Each judgment is 2 points, total 20 points.)題號12345678910選項FTF

24、TTTTFTFIIFill in the blank . (Each blank is 1 point, total:20 points)題 號1234填空privatenamepublic and protected abstract class題 號5678填空6catch ()?:, :ostreamIIISingle Choice (Each choice is 1 point, total:10 points)1B 2.B 3.D 4.A 5.CIV Point out the error the following programming and explain the reaso

25、nNumber/ LineReasonLine NumberReason1/L1沒有數(shù)據(jù)類型int6/L15不能使用類名訪問成員函數(shù)2/L3c是常數(shù)據(jù)成員，不能這樣初始化7/L18左值不是一個指針變量3/L4pobj不能是Point類型8/L23不能直接使用x4/L9構(gòu)造函數(shù)不能有返回類型9/L25不能訪問protected成員5/L14不能直接用.來訪問私有成員10/L26不能直接訪問私有成員Write out the results of the following programs. (Each subject is 5 points; total:30 points)1. The st

26、ring is Hello C+ world!3. Area of Figure is 0Area of circle is 28.26Area of rectangle is 202. Zoot 1.2 Jimmy 35.4 A1 657.6 Stan 778.26. m=2,n=5m=3,n=5m=1.6,n=7m=5.4,n=74. This is a test program!Hello C+ world!This is an appending program. 5.constructing Base1 a=5constructing Base2 b=6constructing Ba

27、se3 c=7constructing Derivedclass d=8. Programming Design. (total 20 points)1.#include #include /1 pointusing namespace std;class Pointpublic:Point(int xx,int yy) x=xx; y=yy; / 2 pointsPoint()x=y=0; /2 pointsvoid input() /2 points cinxy; void show() cout(x,y)endl; / 1 pointdouble dist(Point p); /2 po

28、intsprivate:int x;int y; ;double Point:dist(Point p) return sqrt(p.x-x)*(p.x-x)+(p.y-y)*(p.y-y); int main()Point p1(1,2), p2;cout請輸入點p2的坐標：endl; p2.input( );p1.show( ) ; /輸出(1,2)p2.show( ) ; coutThe distance of point p1 and point p2 is p1.dist(p2)endl;return 0; 2. #includeusing namespace std;class R

29、MBpublic:RMB (int y,int j,int f)yuan=y;jiao=j;fen=f; /1 pointRMB (int y,int j) yuan=y; jiao=j; fen=0; /1 pointRMB (int y) yuan=y; jiao=0; fen=0; /2 pointsRMB ()yuan=0;jiao=0;fen=0; /1 pointvoid show()coutyuan元jiao角fen分=10) mon.fen -=10;mon.jiao +;if(mon.jiao =10) mon.jiao -=10;mon.yuan +;return mon;

30、int main() RMB m1(100,2,8), m2(200,9), m; if( m1=m2) cout”兩者的錢數(shù)相等！”endl; else cout”兩者的錢數(shù)不相等！”endl; m=m+50; m.show( ); /按元角分輸出 return 0;Judgment.(The right answer is “T”,the wrong one is “F”.)The keyword friend is used in a function definition,not in a function declaration.（F）Values stored in the ele

31、ments of a vector may be accessed the same way as values stored in the elements array.（）A class can only have one subclass.（F）It is not possible to access the attributes of a class with no member fuctions(methods).（F）The meaning of all the C+ operators(such as *,+etc.)is fixed and cannot be changed.

32、(T)If you do not declare a constructor in a class, the compiler will furnish a default constructor for you automatically.(T)An object of a class A can be a private member of a class B.(T)Because we cannot instantiate objects of abstract base classes, we cannot declare pointers and references to abst

33、ract base classes.(F)In dynamic binding an objects type must be known at compile time for a virtual function call to be compiled.()The assignment operator can only be overloaed into a nonmember function.(F)Fill in the blank.There are four stream object defined in ,the object_cerr_is the standard err

34、or output stream.In C+,Encapsulation is achieved by making_class（類）_.In a class,maximum number of destructors are_1_.Assume that A is a class,the constructor of class A had be called_4_times when the statement “A a3,b(6),*p;”was executed.Assume that the name of type parameter is defined as T,when de

35、fining the function template,you should add prefix statement_template_.If the name of a is Myclass,then the name of its destructor is_it has _return values.If class B is derived from class A,class C is derived from class B,an object of class C is created,then the called order of constructor is_In th

36、e C+,in addition to “,”,” * ”,”sizeof ”,the operator_and_are also cant be overload. 選擇1、（ ）Which are isnt the member funcition of a class?A)Constructor B)Destructor C)Friend Function D)Copy Constructor2、（ ）Opening the file”d:file.dat”and write data to it,which statement should we use?A)ifstream infi

37、le(“d:file.dat”,ios:in);B)ifstream infile(“d:file.dat”,ios:in);C)ofstream infile(“d:file.dat”,ios:out); D)fstream infile(“d:file.dat”,ios:in/ios:out);3、（ ）Which is wrong about class? A)Class is one kind of type, it encapsulates data and operates. B)Object is a instance of a class. C)One object can o

38、nly belong to a class. D)There are only one object in a class.4、（ ）Usually the parameter of a copy constructor is_. A) a object B)the member of a object C)the reference of a object D)the pointer of a object5、( ) If there are a pure virtual function in a class,then we call this class as_ A)abstract c

39、lass B)virtual basic class C)derived class D)none of abovePoint out the error the following programming and explain the reason(write out the error line member，total:15 points)#include using namespace std; class Cbook private: char *p_book; int num; public: void CBook(const char *p_val)p_book=new cha

40、rstrlen(p_val);strcopy(p_book,p_val);num=num+1;void getNum()constreturn num;void setNum(int number)constnum=number;void print() const;CBook()deletep_book;Void print()constcoutp_bookendl;Void main()char book_title60;CBook *p_book_obj;coutbook_title;Cbook abook;coutabook.num;p_book_obj=abook;p_book_ob

41、j.print();錯誤行號 改錯錯誤行號 改錯1_1改成，#include1_23改成“void CBook:printf”1_29引號，應(yīng)該是英文的1_3改成 CBook1_22之后加“；” 編程1、class Moveprivate:double x;double y;public:Move(double a = 0, double b=0); /set x,y to a,bshowmove()const; /shows current x,y values;Move add(const Move & m)const; /this function adds x of m to x of

42、 invoking object to get /new x, adds y of m to y of invoking /object to get new y,create a new /move object initialized to new x,y values, and returns itreset(double a=0,double b=0); /reset x,y to a,b;Int main() Move Point1(3,4),Point2,Point3;cout”x and y values of Point1 are:”;Point1.showmove();Poi

43、nt2.reset(5,6);Point3=Point1.add(Point2);cout”x and y values of Point3 are:”;Point3.showmove();return 0; Create member function definitions to satisfy the test function main.2、（9 points）Deine a Complex class,it has two private member real and image.1)Please write a constroctor which can accept 0-2 p

44、arameters,a copy constructor, a Print function which can display the value of data member;2) Write Set function:setReal and setImage,which can change the value of private data member;3)Overload operator “+”and”-”;which can finish addition and subtraction of two complex.The main() function listed as

45、following:void main()Complex c1(1.5,7.9);Complex c2(c1);c2.setReal(2.7);c2.setImage(0);c1.Print();c2.Print();(c1+c2).Print();(c1-c2).Print();一、Judgement(Please judge the following 10 sentence, and full the blank of the list with your result. The right answer is “”, the wrong one is “” .20 point.) 1.

46、 We can assign a value to a constant when it is declared. 2. int sort (int arr ) and float sort (float arr ) are overloaded functions.3A function that the compiler generates using a function template is called an instance of the function template or a template function. 4 A constant pointer to a constant cannot be changed to point to another constant of the same type. 5Just like the structure members, the default access specifier for class members is private. （）6If we defined a constructor in a class, we must