Blog: CS304 VU Midterm Current Papers Fall 2011 of Virtual University of Paksitan (www.vusolutions.com)

CS304 VU Midterm Current Papers Fall 2011 of Virtual University of Paksitan (www.vusolutions.com)

Question No: 21 ( Marks: 2 )

Write down C++ code for unary operator overloading.

Question No: 22 ( Marks: 2 )

Friend functions increase 'Programming bugs'. What is your opinion?

Question No: 23 ( Marks: 3 )

Explain overloading?

Question No: 24 ( Marks: 3 )

Give c++ code to overload unary '-- ' operator for complex numbers class.

Question No: 25 ( Marks: 5 )

Write down the out put of the following code:

class Student{ …

public:

static int noOfStudents; Student();

~Student();

…

};

int Student::noOfStudents = 0; Student::Student(){

noOfStudents++;

}

::~Student(){

noOfStudents--; }

int Student::noOfStudents = 0;

int main(){

cout <

cout <

Student studentB;

cout <

}

Question No: 26 ( Marks: 5 )

What are Accessor Functions, Explain with an example.

Question No: 1 ( Marks: 1 ) - Please choose one

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

Question No: 2 ( Marks: 1 ) - Please choose one

a'A static member function can be called, even when a class is not __________.

► Declared

► Define

► Instantiated

► Called

Question No: 3 ( 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: 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

__________ provide the facility to access the data member.

► accesser function

► private function

► inline function

► None of the given

Question No: 6 ( Marks: 1 ) - Please choose one

Constant objects cannot change their state,

► True

► False

Question No: 7 ( Marks: 1 ) - Please choose one

The ________ relationship indicates that an object contains other objects.

► None of given

► 'has-a'

► 'is-a'

► 'be-

Question No: 8 ( Marks: 1 ) - Please choose one

Which one of the following features of OOP is used to derive a class from another?

► Encapsulation

► Polymorphism

► Data hiding

► Inheritance

Question No: 9 ( Marks: 1 ) - Please choose one

_______ is a relationship

► Inheritance

► Polymarphism

► abstraction

► encapsulation

Question No: 10 ( Marks: 1 ) - Please choose one

__________ satisfy the condition of polymorphism

► Carbon

► Diamond

► Coal

► all of the given

Question No: 11 ( Marks: 1 ) - Please choose one

A generalization-specialization relation between classes are implemented using

► data hiding

► friend classes

► encapsulation

► inheritance

Question No: 12 ( Marks: 1 ) - Please choose one

The >= operator can be overloaded.

► True

► False

Question No: 13 ( Marks: 1 ) - Please choose one

In order to free the memory occupied by the object, we use -------------

► Constructor

► Destructor

► Shallow Copy

► Deep Copy

Question No: 14 ( Marks: 1 ) - Please choose one

Which of the following is not an example of multiple inheritances?----------

► Mermaid

► Woman 

► None of the given

► Amphibious Vehicle

Question No: 15 ( Marks: 1 ) - Please choose one

Static variable can be initialized more than once.

► True

► False

Question No: 16 ( Marks: 1 ) - Please choose one

A generic class showing all the common attributes and a behavior of other classes represents a very important feature in oop 

called --------

► Inheritance

► Encapsulation

► Polymarphism

► Abstraction