Final Examination Semester 2 / Year 2012

Transcription

1 Final Examination Semester 2 / Year 2012 COURSE : FUNDAMENTALS OF SOFTWARE DESIGEN AND DEVELOPMENT COURSE CODE : PROG1003 TIME : 2 1/2 HOURS DEPARTMENT : COMPUTER SCIENCE LECTURER : SO YONG QUAY Student s ID: Batch No: Notes to candidates: 1) The question paper consists of 5 pages and 16 questions. 2) Students are required to answer all questions. 3) Return the question paper with your answer booklet and softcopy.

2 Part I: Multiple Choice Questions (10 X 2 marks = 20 marks) 1. To assign a double variable d to an int variable x, you write A. x = (long)d B. x = (float)d; C. x = d; D. x = (int)d; 2. Which one of the following is NOT a correct Java class name? A. Southern2u B. 2uSouthern C. TanKokTong D. mysecondjavaclass 3. Assume x= -1 and y=2, what is the result of evaluating ++x + y? A. 1 B. 2 C. 3 D What is the result of the following remainder? int x = -36; int y = -5; int remainder; remainder = x % y; A. 1 B. -1 C. 6 D Which of the loop statements always have their body executed at least once. A. The for loop B. The while loop C. The do-while loop D. None of the above 1 / 5

3 6. What does the following program output? class question6{ public static void main ( String[] args ) { int price = 4; int items = 3; System.out.println("Total selling price is :" + (price * items)); A. Total selling price is : 4 * 3 B. Total selling price is : +12 C. Total selling price is : 12 D. Total selling price is : 7 7. Suppose x = 0, y = -2, and z = 2. What is the printout of the following statement? if (x > 0) if (y > 0) System.out.println("AAAA"); else if (z > 0) System.out.println("BBBB"); else System.out.println("CCCC"); A. AAAA B. BBBB C. CCCC D. None of the above. 8. A variable that is declared inside a method is called variable. A. a static B. a local C. a global D. a class 2 / 5

4 9. Suppose array a is int[] a = {2, 4, 6, what is a[3] - a[1]? A. 0 B. 4 C. 6 D. None of the above 10. Which of the following is not an advantage of using methods? A. Using methods makes program run faster. B. Using methods makes reusing code easier. C. Using methods makes programs easier to read. D. Using methods hides detailed implementation from the clients. Part II: Converting Code 11. Convert the following if statement to a switch statement. (5 marks) if (a ==1) x += 11; else if (a == 3) x += 13; else if (a == 5) x += 15; else if (a == 7) x += 17; else x+= 19; 12. Convert the following for loop statement to a while loop statement. (5 marks) for (int x = 1; count <=100; x += 2) System.out.print(x+" "); System.out.println( ); 3 / 5

5 Part III: Show the output of the following programs 13. Show the output of the following two programs: a) (5 marks) public class Q1 { public static void main (String[] args){ int i =1; while (i <= 6) if ((i++) % 2 ==0) System.out.println(i); b) (5 marks) public class Q2 { public static void main(string[] args) { for (int i = 1; i <= 5; i++) { imethod(i); System.out.print('\n'); public static void imethod(int i) { for (int j = 1; j <= i; j++) System.out.print(j + " "); 4 / 5

6 Part IV: Write programs 14. Write a program that prompts the user to enter 10 students names, their scores (Assignment, Case Study, Project, Test and Exam), and prints the students result in descending order of their final scores. (30 marks) Given that Final Score = Assignment (10%) + Case Study (10%) + Project (20%) + Test (20%) + Exam (40%) Your program should include 3 sub-programs (Using methods): 1. public static void CalculateFinalScore(double[][] CScores): used to calculate the final score of each student. 2. public static void SortingScore(double[][] SScore, String[] namelist):sorting by descending order based on Final Score 3. public static void DisplayResult(double[][] DScore, String[] DName): used to displays the result as s the format given below (by descending) Name Assignment Case Study Project Test Exam Final Score Wong Ah B Tang Mee Hui Ah Ming wants to calculate the account balance after save the money into a savings account with the certain annual interest rate. Write a program that prompts Ah Ming to enter an amount (e.g., 10000), the annual interest rate (e.g., 5), and the number of years (e.g., 5), and displays the amount in the savings account after the given year. (15 marks) 16. Write a program to roll two dice. Each die has six faces representing values 1, 2, 3, 4, 5 and 6, respectively. Rolls both dice 200 times and count the number of snake eyes (if two dice are 1) that occur. You program also needs to show the ratio of snake eyes. (15 marks) / 5