cs304 paper 2010

MIDTERM EXAMINATION
Spring 2010
CS304- Object Oriented Programming (Session - 2)



Question No: 1 ( Marks: 1 ) - Please choose one
Which part of an object exhibits its state?
► Data


► Operations

► Any public part

► Any private part


Question No: 2 ( Marks: 1 ) - Please choose one
Inheritance is a way to

► organize data.
► pass arguments to objects of classes.
► add features to existing classes without rewriting them.
► improve data-hiding and encapsulation.

Question No: 3 ( Marks: 1 ) - Please choose one
Suppose you have been given the following design,

"A person has a name, age, address and sex. You are designing a class to represent a type of person called a patient. This kind of person may be given a diagnosis, have a spouse and may be alive".
Given that the person class has already been created, what of the following would be appropriate to include when you design the patient class?
► registration date and diagnosis
► age and sex
► sex and diagnosis
► diagnosis and age

Question No: 4 ( Marks: 1 ) - Please choose one
What problem(s) may occur when we copy objects without using deep copy constructor?






► Dangling pointer
► Memory Leakage
► All of the given
► System crash

Question No: 5 ( Marks: 1 ) - Please choose one
this pointers are not accessible for static member functions.

► True
► False

Question No: 6 ( Marks: 1 ) - Please choose one
A static member function cannot be declared.

► Static
► Implicit
► Explicit
► Virtual

Question No: 7 ( Marks: 1 ) - Please choose one
_______ remain in memory even when all objects of a class have been destroyed.

► Static variables
► Instance variable
► Primitive variables
► None of given

Question No: 8 ( Marks: 1 ) - Please choose one
Friend functions are _____________ functions of a class.
► None of given
► object member
► non-member
► data member

Question No: 9 ( Marks: 1 ) - Please choose one
___________, which means if A declares B as its friend it does NOT mean that A can access private data of B. It only means that B can access all data of A.






► Friendship is one way only
► Friendship is two way only
► NO Friendship between classes
► Any kind of friendship

Question No: 10 ( Marks: 1 ) - Please choose one
The statement objA=objB; will cause a compiler error if the objects are of different classes.

► True
► False

Question No: 11 ( Marks: 1 ) - Please choose one
Identify which of the following overloaded operator function’s declaration is appropriate for the given call?
Rational_number_1 + 2.325
Where Rational_number_1 is an object of user defined class Rational_number.

► Rational_number operator+( Rational_number & obj);
► Rational_number operator+(double& obj);
► Rational_number operator+(Rational_number &obj, double& num);
► operator+(double& obj);

Question No: 12 ( Marks: 1 ) - Please choose one
Which operator can not be overloaded?

► The relation operator ( >= )
► Assignment operator ( = )
► script operator ( [] )
► Conditional operator (? : )

Question No: 13 ( Marks: 1 ) - Please choose one
To convert from a user-defined class to a basic type, you would most likely use

► a built-in conversion operator.
► a one-argument constructor.
► an overloaded = operator.
► a conversion operator that’s a member of the class.

Question No: 14 ( Marks: 1 ) - Please choose one
The technique in which we visualize our programming problems according to real life’s problems is called
----------------
► structured programming
► object oriented Programming
► procedural programming
► non of the given

Question No: 15 ( Marks: 1 ) - Please choose one
In object orientated programming, a class of objects cans _____________ properties from another class of objects

► Utilize
► Borrow
► Inherit
► Adopt

Question No: 16 ( Marks: 1 ) - Please choose one
A C++ class is similar to --------------------

► Structure
► Header File
► Library File
► None of the given

Question No: 17 ( Marks: 2 )
Can we create an array of objects for a class having user defined constructor? Justify your answer.


Question No: 18 ( Marks: 2 )
Friend functions increase ‘Programming bugs’. What is your opinion?


Question No: 19 ( Marks: 2 )
Explain two benefits of setter functions.


Question No: 20 ( Marks: 3 )
What are binary operators? Give an example of binary operators overloading using any class.


Question No: 21 ( Marks: 3 )
Give c++ code to overload assignment operator for string class.

Question No: 22 ( Marks: 5 )
Writ c++ code to overload subscript[] operator for String class.


Question No: 23 ( Marks: 5 )
Detect and correct compile time error(s) in the following code.

class Exam
{
char *ExamName;
int No_of_paper;

public:
Exam()
{
ExamName = "Final Term";
No_of_paper = 5;
}

void setname( char* name) const
{
ExamName = name;
}
void setpaper(int paper) const
{
No_of_paper = paper;
}
char* getname()
{
return ExamName;
}
int getpaper()
{
return No_of_paper;
}
};

int main()
{
const Exam exam1;

cout << " Exam = "<cout << " Numbe of paper = " << exam1.getpaper();

getch();
return 0;
}