Comp 110

Lab Project #11

Due: 3/18/2006

Write a Temperature class that has two parameters: a temperature value (a floating-point number) and a character for the scale, either ‘C’ for Celsius or ’F’ for Fahrenheit. The class should have four constructor methods: one for each instance variable (assume zero degrees if no value is specified and Celsius if no scale is specified), one with two parameters for the two instance variables, and a default constructor (set to zero degrees Celsius). Include (1) two accessor methods to return the temperature, one to return the degrees Celsius, the other to return the degrees Fahrenheit – use the formulas from Programming Project 2 of Chapter 3 to write the two methods, and round to the nearest tenth of a degree; (2) three set methods, one to set the value, one to set the scale (‘F’ or ‘C’), and one to set both; and (3) comparison methods, one to test whether two temperatures are equal, one to test whether one temperature is greater than another, and one to test whether one temperature is less than another. Then write a driver program that tests all the methods. Be sure to use each of the constructors, to include at least one true and one false case for each comparison method, and to test at least the following temperature equalities: 0.0 degrees C = 32.0 degrees F, -40.0 degrees C = -40.0 F, and 100.0 degrees C = 212.0 degrees F. (See problem 7 on page 413 of the text)

Create a UML Class diagram showing all the instance variables and methods required.

For each method of the class write a description of what it does. That is, write what would be appropriate to put in comments in the front of the method to serve as the user interface to the method. Be sure to describe all the input and output parameters, if any, for each method. For each method that calculates something give the equation(s) or, for complicated methods, provide pseudo instructions (pseudocode) showing the steps of each such method.

Make sure your all your code is self-documented including an appropriate comment header block for each class. Use indentation to make the structure of your code clear.

Test you code by running a sufficient number of test cases.

Turn in your design along with the code and the results from running the test cases.

You don’t have to do this all by yourself. You may partner with someone else in the class to complete this assignment.