CS1261 OBJECT ORIENTED PROGRAMMING question papers Anna university APRIL/MAY 2008 question papers Download

B.E/B.Tech DEGREE EXAMINATION APRIL/MAY 2008
Fourth Semester                     
(Regulation 2004)
Electrical and Electronics Engineering

CS1261 OBJECT ORIENTED PROGRAMMING


Time: Three hours                                                    Maximum marks: 100
Answer ALL questions

PART A (10 x 2 =20 marks)

1. What are the benefits of inline functions over macros?

2. Check whether the following is correct. If correct what is the final value is assined to the irc variable.If there is an error what type of error it is const int& irc = 47; irc = -37;

3. During what instances a copy constructor is called?

4. What is the output of the following program?
Void duplicate (int& a, int& b, int& c)
{
a* = 2;
b* = 2;
c* = 2;
}
int main()
{
int x = 1, y = 3, z = 7;
duplicate (x, y, z);
Cout << "x =" << x <<", y=" << y << ",z =" << z;
return 0;
}

5. What are the various access levels supported by C++ classes?

6. What are the virtual functions? How do they differ from non-virtual member functions?

7. Write the output of the following program, if its correct? Otherwise indicate the error
class abc 1{
Public static void main (string args[]){
    char a = 'a' + 2;
    system.out.println (a);
    int i = 2;
    char c = 'a' + i;
    System.out.println (c);
  }
};

8. Write a Java program to count the number of strings and characters passed as command line arguments.

9. What is the difference between an abstract class and an interface in Java?

10. Draw the complete inheritance hierarchy of class applet.

PART B (5 x 16 = 80)

11 (a)   Describe the features of object oriented programming with suitable examples.(16)

(or)

(b) (i) Describe how memory is allocated and deallocated in C++ dynamically. How could you check whether memory allocation is successful?

(ii) What are default arguments? How are they defined and called?Give examples.

12.  (a)  (i) What are static members of a class? Give a typical use of static members and a program to illustrate their need and programming syntax. (8)

(ii)  Write a C++ program to insert line number in a file (8)

(or)

(b) Define a rectangle as class. Provide suitable members functions, constructors (atleast two overloaded definitions), destructor. Write a C++ program to illustrate creation of objects, member fuction access, access of objects through pointers. (16)
          

13 (a) Give an example to illustrate how inheritance provides reusability of code. What are inherited from a base class? Describe different types of inheritance with suitable examples and programming syntax.(16)

(or)

(b) Write a C++ program to define a vector as a class. Provide suitable constructors and members and Overload the operators +, [ ], << and >> suitably. (16)

14.  (a)  (i)  Write a comblete java program to find factorical of a number using recursive method.(10)

(ii)  Describe any six member functions of string class in Java. (6)

(or)

(b) Write a Java program to implement classes counter, Up counter and Down counter. Use suitable inheritance hierarchy. Equip the classes with suitable members. Write a test program.(16)



15.  (a) Describe the life cycle of a thread. Illustrate the ways of creating threads. Write a sample code to illustrate communication between threads. (16)

(or)

(b) Write a program that will display the name of a student and his/her roll number and the course in which he / she is studying. The courses available in the college are marked as CSE, ECE, EEE and the respective class strength are 80, 70 and 50. Define the following exceptions.
Invalid Branch Exception - If the specified branch is anything other than CSE, ECE and EEE.
Invalid Roll No Exception - If specified roll number is negative or exceeds the class strength
Nagative Roll No exception - If specified roll number is negative
Exceeds strength exception - If specified roll number exceeds the class strength
Define a suitable inheritance hierarchy.

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