NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JUNE/JULY 2013 EXAMINATION

COURSE CODE: CIT392

COURSE TITLE: Computer Laboratory II

TIME ALLOWED: 2 hrs

INSTRUCTION: Attempt any four (4) questions

Question 1

a.         With respect to the Java programming language and with the aid of examples, write short notes the following terms:

i. Classes (3 marks)

ii. Methods (3 marks)

iii. The this keyword (2.5 marks)

b.         The Central Bank of Togo has issued bank notes in denominations of 100, 50 and 1 Togolese Dollars. Write a Java program that accepts any integer amount supplied by a user and calculates the smallest number of bank notes required to issue that amount of money to the user. [Hint: For example, to issue 100 Togolese dollars, we need only 1 bank note] (9 marks)

Question 2

a.         We want to determine the largest and the smallest number in a list of values. All values are integers. Write a C++ program that accepts the number of values from a user and then accepts the values themselves and then outputs which is the largest and which is the smallest. (13 marks).

b.         With respect to C++ arrays, define the following terms:

i. Array (1 mark)

ii. Index (1 mark)

iii. Dimension (1 mark)

c.         With the aid of an example, explain briefly C++ pointers (1.5 marks).

Question 3

a.         Contrast between;

I) Structured Programming.

II) Object-Oriented Programming.

b.         List any four Windows XP commands.

Question 4

a.         There are 5 independent libraries for input/output operations in ADA; enumerate them.

b.         Write short notes on any 4.

Question 5

a.         List any six Windows XP commands.

b.         Write short notes on any four.

Question 6

a.         Enumerate three Non-numeric Data Type in C++

b.         Write short notes on the three (11 ½ marks)