SCHOOL OF SCIENCE AND TECHNOLOGY
Course Code: CIT 383
COURSE TITLE: INTRODUCTION TO OBJECT ORIENTED PROGRAMMING
Total mark is 70 and each question carries 171/2 marks
Answer any four (4 ) questions in 2 Hours
1(a) What do you understand by Recursive Operator? (4 marks)
1(b) Give the full meaning of the following acronyms:
(i)OS
(ii)GB
(iii)FTP
(iv)CRT
(v)ADT
(vi)JVM
(vii)DLSs
(viii)WWW
(ix)OOP
(1 mark each)
1 (c ). Outline three Object Oriented Languages. (41/2 marks)
2a. What is Encapsulation? (4 marks)
2b. Write a short note on each of the following:
(i) Overloaded Method and Overridden Method (3 marks)
(ii) Local Variables and Instance Variables (3 marks)
(iii) Set and Get Methods (3 marks)
2c.Outline three main features of Object Oriented Programming.(41/2 marks)
3(a) Explain Inheritance in Object – Oriented Programming Language? ( 4 marks)
3(b) Evaluate the value of x after each of the following statement is executed:
i. x=Math.abs(-7.5);
ii. x=Math.floor(-8.7);
iii. x=Math.ceil(6.3);
iv. x=Math.floor(4.1);
v. x=Math.ceil(-2.5);
vi. x=Math.sqrt(400);
vii. x=Math.pow(2,5);
viii. x=Math.Min(-4,-8);
ix. .x=Math.ceil(-Math.abs(-5+Math.floor(-3.2)));
(1 mark each)
3( c) Outline three (3) examples of methods (41/2 marks)
4a. Distinguish between a Class and an Object? (8 marks)
4b. Explain the term “downcasting” (5 marks)
4c. Identify three (3) examples of methods (41/2 marks)
5(a) What is Abstract Data Types? List two types (8 marks)
5(b) Explain Operator overloading. List three types of operators. (5 marks)
5(c) Outline three (3) Object-Oriented Programming Concepts (41/2 marks)
a)Explain the term “Polymorphism” List types (5 marks)
6b. Differentiate between a Superclass and a Subclass (8 marks)
6c. Outline three (3) ways to call a method(41/2 marks)
