POLC38H3 : Essay Questions

Short Answer & Multiple Choice (2 points each) For all of the 'what prints' questions in this section, if you believe that nothing will print as a result of exe- cuting the sample code, write 'N/A. We are not evaluating the difference between System.out.print and System.out.println 9. What is the value of x? double x = (double) (1/2) + (1/2) + (double) (1/2);

23. Write a program which takes the average of all of the non-negative command line arguments and then prints the result. Your program must call the methods you wrote in the previous questions. For example, if someone runs the program by typing run Midterm 5 6 10 0 -4 into Dr. Java (or java Midterm 5 6 10 0 - 4 from the command line), your program should print 5.25. You may assume that the person running your program types in integers as command line arguments and also that at least one of the numbers typed at the command prompt is non-negative.

Longer multiple choice questions (3 points each) Coding Question - Fibonacci sequence You are to write a method named "Fibo" that takes as input an integer n, and returns the nth number in the Fibonacci sequence. If Fibo (n) denotes the nth number in the Fibonacci sequence, then recall for n > 2, Fibo (n) = Fibo (n-1) + Fibo (n-2), and Fibo (1) = 1 and Fibo (2) = 1. You are to assume that the user is always going to enter an input greater than 2. For example Fibo (4) = 3. Use the 7 following questions to "write" your code. Pay close attention to how your answers group together with each other. 26. Line 1 (A) public static int Fibo (int n) { (B) public static void main(String[] args) { (C) public static int Fibo () { (D) public static void Fibo (Double input) { (E) public static void Fibo (int n) {