Assignment 6. Methods Homework Spring 2017 P Question 1 all

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1 Assignment 6. Methods Homework Spring 2017 P Question 1 all True since the parameters are different b. True since the parameters are different c. False since the return type is different but the parameters are the same d. True since there are different numbers of parameters e. True f. False Main call any number of methods g. True h. False They can have the same number of parameters if they are of different types i. False They can return different types if they have different types of parameters j. False The parameters in the header are called the formal parameters; The passed parameters from the calling routine are called the actual parameters. k. True l. False the argument can be casted upward by the parameter. However downwards casting doesn t work m. True n. False since a variable may have a smaller scope if is defined within a nested set of brackets. Then it may be even more local (i.e to a loop) o. False. Some methods are void. p. False. It is a convention, but not mandatory q. True r. False, since the formal parameter name is used in the method s logic Question 2 a,c (fixes in red) 1 pt for correcting 1 pt for each output public class WhatTheHey public static int method1(int x, int y) return x+y; public static int method2(double x, double y) return (int)(x-y); public static void main(string[] args)

2 System.out.println("The output is: "+ method1(method2(7.1, 6.2), method1(2,3)) +"years of bad luck"); Output: The output is: 5 years of bad luck c. public class ThisComputesSomeWeirdStuff public static int method1(int a, int b) if(a%2 ==0) return (a); else return(b); public static int method2(int a, int b) while(a!= 1)b++;a=a/2; return (b); public static void main(string[] args) System.out.println(method2(method1(3,10), method1(16,57))); System.out.println(method2(method1(190,10), method1(16,57))); System.out.println(method2(method2(3,10), method1(16,57))); System.out.println(method1(method2(3,10), method2(16,57))); Output: Question 3 a,b,c public static int largesti(int x, int y) public static int largesti(int x, int y, int z) public static int largesti(int x, int y, int z, int w) b. public static double percenttax(double income) public static double percenttax(int incomethousands)

3 c. public static double grade(int questions, int correct) Question 4 - a,b,c i. Ambiguity in which method to use; if there was just one method then the casting upward could occur ii. loses precision in passing double to an int iii. compiles iv. compiles b. All will compile. In each case there is only one method that works. Last three must use the method with double. (4pts) c. Different returns but arguments of same type and number Question 5 The value are not passed back. The formal parameters are not references to values, but are actual values Programming Exercises 1 Min and Max 7 8 The minimum is 7 and the maximum is The minimum is -2 and the maximum is Average Please enter the number of figures to be averaged as an integer: 4 Please enter 4 numbers of type double The average of the numbers is: 2.5

4 9 Carnival Game Simulation Run several times to see results 10 Present Value of an Investment yrs, %, compounds, amt Harmonic Mean 12 4 Harmonic Mean is: 6.0 Arithmetic Mean is: 8.0 Geometric Mean is: Please enter two integers greater than zero 0 4 Please enter two integers greater than zero 3 10 Harmonic Mean is: Arithmetic Mean is: 6.5 Geometric Mean is: Zeno s Paradox Bonus 1 The value of the Zeno sum is: The value of the Zeno sum is: The value of the Zeno sum is: The value of the Zeno sum is:

5 The value of the Zeno sum is: The value of the Zeno sum is:

Review Chapter 6 in Bravaco. Short Answers 1. This type of method does not return a value. a. null b. void c. empty d. anonymous

Review Chapter 6 in Bravaco. Short Answers 1. This type of method does not return a value. a. null b. void c. empty d. anonymous Assignment 3 Methods Review CSC 123 Fall 2018 Notes: All homework must be submitted via e-mail. All parts of assignment must be submitted in a single e-mail with multiple attachments when required. Notes: