CS304 Mid term Paper 2010 - 1

MIDTERM EXAMINATION Spring 2010

CS304- Object Oriented Programming

Time: 60 min
M a r k s: 38

Q. No: 1
Suppose there is an object of type Person, which of the following can be considered as one of its attributes

• Name
• Age
• Work()
• Both Name and Age

Q. No: 2
What a derived class can add?

• New data members
• New member functions and New friend functions
• New constructors and destructor
• All of given

Q. No: 3
________ is/are used to access information hidden within an object?

• Interface
• Private data members
• Private member functions
• Both public and private members

Q. No: 4
this pointers are not accessible for static member functions. vuzs

• True
• False

Q. No: 5
A static member function cannot be declared.

• Static
• Implicit
• Explicit
• Virtual

Q. No: 6
C++ compiler does not allow to dynamically allocate memory for objects

• False
• True

Q. No: 7
Given the following class
class Base{
int Age=33;
}
How you can improve above class with respect to accessing the field Age?

• Define the variable Age as private
• Define the variable Age as protected
• Define the variable Age as private and create a get method that returns it and a set method that updates it
• Define the variable Age as protected and create a set method that returns it and a get method that updates it

Q. No: 8
Friend class and friend function can be used as an alternate to each other

• True
• False

Q. No: 9 http://vuzs.net
Which of the following operators always takes no argument if overloaded?

• /
• -
• +
• ++

Q. No: 10
Suppose that the Test class does not have an overloaded assignment operator. What happens when an assignment a=b; is given for two Test objects a and b?

• The automatic assignment operator is used
• The copy constructor is used
• Compiler error
• Run-time error

Q. No: 11
Assume a class C with objects obj1, obj2, and obj3. For the statement obj3 = obj1 - obj2 to work correctly, if the overloaded - operator must

• take two arguments.
• return a value.
• create a named temporary object.
• take four arguments

Q. No: 12
Which operator can not be overloaded?

• The relation operator ( >= )
• Assignment operator ( = )
• Script operator ( [] )
• Conditional operator (? : )

Q. No: 13 http://vuzs.net
We achieve independence of internal implementation from its external interface through-----------

• Encapsulation
• Information Hiding
• Abstraction
• both encapsulation and information hiding

Q. No: 14
Which one of the following is not an object association?

• Simple Association
• Inheritance
• Aggregation
• Composition

Q. No: 15 http://vuzs.net
We capture the object attributes and behavior in Object Oriented programming using---------------

• Class
• Function
• Data Members
• Instances

Q. No: 16
The return type of a constructor is of -------------

• Integer
• Character
• Double
• No type

Q. No: 17
Can we create an array of objects for a class having default constructor?. Justify your answer.

Q. No: 18
Friend functions increase ‘Data vulnerability’, what is your opinion ?

Q. No: 19
Explain two benefits of setter functions.

Q. No: 20 
Consider the class given below what will be the values in variables x,y and z after creating object of this class,

class ABC{
int x;
int y;
int z;
public:
ABC();
};
ABC::ABC():x(10),z(x),y(x)
{
…
}


Q. No: 21
Explain what type of copy the default assignment operator "=" does when applied to objects. (shallow copy or deep copy)


Q. No: 22 
What is composition? Explain it with the help of an example.


Q. No: 23
How we can overload Stream Extraction and Insertion Operators in c++?Give example code for Complex Number Class.