FINALTERM EXAMINATION
Fall 2009
CS304- Object Oriented Programming (Session - 4)
Time: 120 min
Marks: 75
Question No: 1 ( Marks: 1 ) - Please choose one
A template provides a convenient way to make a family of ► variables and data members
► functions and classes
► classes and exceptions
► programs and algorithms
Question No: 2 ( Marks: 1 ) - Please choose one
Which one of the following terms must relate to polymorphism? ► Static allocation
► Static typing
► Dynamic binding
► Dynamic allocation
Question No: 3 ( Marks: 1 ) - Please choose one
What is true about function templates? ► The compiler generates only one copy of the function template
► The compiler generates a copy of function respective to each type of data
► The compiler can only generate copy for the int type data
► None of the given.
Question No: 4 ( Marks: 1 ) - Please choose one
Which of the following is the best approach if it is required to have more than one functions having exactly same functionality and implemented on different data types? ► Templates
► Overloading
► Data hiding
► Encapsulation
Question No: 5 ( Marks: 1 ) - Please choose one
template <>class Vector<char*> { }
This is an example of partial specialization.
► True
► False
Question No: 6 ( Marks: 1 ) - Please choose one
Classes like TwoDimensionalShape and ThreeDimensionalShape would normally be concrete, while classes like Sphere and Cube would normally be abstract. ► True
► False
Question No: 7 ( Marks: 1 ) - Please choose one
A non-virtual member function is defined in a base class and overridden in a derived class; if that function is called through a base-class pointer to a derived class object, the derived-class version is used. ► True
► False
Question No: 8 ( Marks: 1 ) - Please choose one
Assume a class Derv that is privately derived from class Base. An object of class Derv located in main() can access ► public members of Derv.
► protected members of Derv.
► private members of Derv.
► protected members of Base.
Question No: 9 ( Marks: 1 ) - Please choose one
In order to define a class template, the first line of definition must be: ► template <typename T>
► typename <template T>
► Template Class <ClassName>
► Class <Template T>
Question No: 10 ( Marks: 1 ) - Please choose one
If there is a pointer p to objects of a base class, and it contains the address of an object of a derived class, and both classes contain a nonvirtual member function, ding(), then the statement p->ding(); will cause the version of ding() in the _____ class to be executed. ► Base
► Derived
► Abstract
► virtual
Question No: 11 ( Marks: 1 ) - Please choose one
When the base class and the derived class have a member function with the same name, you must be more specific which function you want to call (using ___________). ► scope resolution operator
► dot operator
► null operator
► Operator overloading
Question No: 12 ( Marks: 1 ) - Please choose one
Non Template Friend functions of a class are friends of ________instance/s of that class. ► All
► One specific
► All instances of one date type
► None of the given options
Question No: 13 ( Marks: 1 ) - Please choose one
The find() algorithm ► finds matching sequences of elements in two containers.
► finds a container that matches a specified container.
► takes iterators as its first two arguments.
► takes container elements as its first two arguments.
Question No: 14 ( Marks: 1 ) - Please choose one
If you define a vector v with the default constructor, and define another vector w with a one-argument constructor to a size of 11, and insert 3 elements into each of these vectors with push_back(), then the size() member function will return ______ for v and _____ for w. ► 11 for v and 3 for w.
► 0 for v and 0 for w.
► 0 for v and 3 for w.
► 3 for v and 11 for w.
Question No: 15 ( Marks: 1 ) - Please choose one
Which of the following may not be an integral part of an object? ► State
► Behavior
► Protected data members
► All of given
Question No: 16 ( Marks: 1 ) - Please choose one
Which is not the Advantage of inheritance? ► providing class growth through natural selection.
► facilitating class libraries.
► avoiding the rewriting of code.
► providing a useful conceptual framework.
Question No: 17 ( Marks: 1 ) - Please choose one
class DocElement{
public:
virtual void Print() { cout << "Generic element"; }
};
class Heading : public DocElement
{
public:
void Print() { cout << "Heading element"; }
};
class Paragraph : public DocElement
{
public:
void Print() { cout << "Paragraph element"; }
};
void main()
{
DocElement * p = new Paragraph();
p->Print();
}
When you run this program, it will print out a single line to the console output.
What will be in that line?
Select one correct answer from the following list:
► Generic element
► Heading element
► Paragraph element
► Nothing will be printed.
Question No: 18 ( Marks: 1 ) - Please choose one
When a virtual function is called by referencing a specific object by name and using the dot member selection operator (e.g., squareObject.draw()), the reference is resolved at compile time. ► True
► False
Question No: 19 ( Marks: 1 ) - Please choose one
In case of multiple inheritance a derived class inherits, ► Only the public member functions of its base classes
► Only the public data members of its base classes
► Both public data members and member functions of all its base classes
► Data members and member functions of any two base classes
Question No: 20 ( Marks: 1 ) - Please choose one
When we write a class template the first line must be: ► template < class class_name>
► template < class data_type>
► template < class T >
Here T can be replaced with any name but it is preferable.
► class class-name()
class template<class_name>
Question No: 21 ( Marks: 1 ) - Please choose one
Which of the following is incorrect line regarding function template? ► template<class T>
► template <typename U>
► Class<template T>
► template < class T, class U>
Question No: 22 ( Marks: 1 ) - Please choose one
An STL container can not be used to, ► hold objects of class employee.
► store elements in a way that makes them quickly accessible.
► compile c++ programs.
► organize the way objects are stored in memory
Question No: 23 ( Marks: 1 ) - Please choose one
Algorithms can only be implemented using STL containers. ► True
► False
Question No: 24 ( Marks: 1 ) - Please choose one
Consider a class named Vehicle, which of the following can be the instance of class Vehicle?1. Car
2. Computer
3. Desk
4. Ahmed
5. Bicycle
6. Truck
► 1, 4, 5
► 2, 5, 6
► 1, 2, 3, 6
► 1, 5, 6
Question No: 25 ( Marks: 1 ) - Please choose one
Consider the code below,class Fred {
public:
Fred();
...
};
int main()
{
Fred a[10];
Fred* p = new Fred[10];
...
}
Select the best option,
► Fred a[10]; calls the default constructor 09 times
Fred* p = new Fred[10]; calls the default constructor 10 times
► Produce an error
► Fred a[10]; calls the default constructor 11 times
Fred* p = new Fred[10]; calls the default constructor 11 times
► Fred a[10]; calls the default constructor 10 times
Fred* p = new Fred[10]; calls the default constructor 10 times
Question No: 26 ( Marks: 1 ) - Please choose one
When a variable is define as static in a class then all object of this class, ► Have different copies of this variable
► Have same copy of this variable
► Can not access this variable
► None of given
Question No: 27 ( Marks: 1 ) - Please choose one
The life of sub object is dependant on the life of master class in _____________. ► Separation
► Composition
► Aggregation
► None of the given
Question No: 28 ( 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: 29 ( Marks: 1 ) - Please choose one
Which of the following operators always takes no argument if overloaded? ► /
► -
► +
► ++
Question No: 30 ( Marks: 1 ) - Please choose one
In Private -------------- only member functions and friend classes or functions of a derived class can convert pointer or reference of derived object to that of parent object ► specialization
► inheritance
► abstraction
► composition
Question No: 31 ( Marks: 1 )
Write the syntax of declaring a pure virtual function in a class?Question No: 32 ( Marks: 1 )
What is meant by direct base class ?Question No: 33 ( Marks: 2 )
Describe the way to declare a template class as a friend class of any other class.Question No: 34 ( Marks: 2 )
What is the purpose of template parameter?Question No: 35 ( Marks: 3 )
Describe in simple words how we can use template specialization to enforce case sensitive specialization in String class.Question No: 36 ( Marks: 3 )
Can we use compiler generated default assignment operator in case our class is using dynamic memory? Justify your answer.Question No: 37 ( Marks: 3 )
Give the names of three ways to handle errors in a program.Question No: 38 ( Marks: 5 )
Consider the following code,class Base{
private:
void base1();
protected:
void base2();
public:
void base3();
};
class Derived: public Base{
private:
void derived1();
protected:
void derived2();
public:
void derived3();
};
int main(){
Derived * derived = new Derived();
return 0;
}
Fill the table below to tell which member functions of Base and Derived classes we can access using the Derived pointer in the code indicated in bold.
| Function Name | Availability (Yes / No)? |
| base2() | ? |
| base3() | ? |
| derived1() | ? |
| derived2() | ? |
| derived3() | ? |
Question No: 39 ( Marks: 5 )
What is the output produced by the following program?#include<iostream.h>
void sample_function(double test) throw (int);
int main()
{
try
{
cout <<”Trying.\n”;
sample_function(98.6);
cout << “Trying after call.\n”;
}
catch(int)
{
cout << “Catching.\n”;
}
cout << “End program.\n”;
return 0;
}
void sample_function(double test) throw (int)
{
cout << “Starting sample_function.\n”;
if(test < 100)
throw 42;
}
Question No: 40 ( Marks: 10 )
Write a publicly derived class “Employee” that is derived from base class named “Company”. Both classes will have function “create()”. Make virtual function of base class and override same function in derived class. Function create will have an output statement of your own choice.In “main” Create an object of base class and call both functions with same object type.
Question No: 41 ( Marks: 10 )
Write a program in C++ which creates three classes named as1. Equation
2. Linear
3. Quadratic
Where Linear and Quadratic are inherited from Equation
Each class has the method Graph. Graph method should be pure virtual in Equation class.
This method should be overridden in both the inherited classes. It is meant to display the Graph shape of its respective class. Graph method of Linear will display the message;
Straight line
Similarly, the Graph method of Quadratic will display the message;
Parabola
In main, call the Graph method of both the Linear and Quadratic equations polymorphically through the parent class (Equation).
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