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Temperatures |
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1 // joi/2/linear/Temperatures.java
2 //
3 //
4 // Copyright 2003 Bill Campbell and Ethan Bolker
5
6 /**
7 * Temperature conversion program,
8 * for exercising LinearEquation objects.
9 *
10 * @version 2
11 */
12
13 public class Temperatures
14 {
15 /**
16 * First a hardcoded test of Celsius-Fahrenheit conversion,
17 * then a loop allowing the user to test interactively.
18 */
19
20 public static void main( String[] args )
21 {
22 Terminal terminal = new Terminal();
23
24 // create a Celsius to Fahrenheit converter
25 LinearEquation c2f = new LinearEquation( 9.0/5.0, 32.0 );
26
27 // ask it to tell us its inverse, for F to C
28 LinearEquation f2c = c2f.getInverse();
29
30 ///////////////////////////////////////////////////
31 // Testing style 1: Hard coded, self-documenting //
32 ///////////////////////////////////////////////////
33
34 terminal.println( "Hard coded self documenting tests:" );
35 terminal.print( "c2f.compute( 0.0 ), should see 32.0: ");
36 terminal.println( c2f.compute( 0.0 ) );
37 terminal.print( "f2c.compute( 212.0 ), should see 100.0: ");
38 terminal.println( f2c.compute( 212.0 ) );
39
40 //////////////////////////////////
41 // Testing style 2: Interactive //
42 //////////////////////////////////
43
44 terminal.println();
45 terminal.println( "Interactive tests:" );
46 while ( terminal.readYesOrNo("more?") ) {
47 double degreesCelsius =
48 terminal.readDouble( "Celsius: " );
49 terminal.println(" = "
50 + c2f.compute( degreesCelsius )
51 + " degrees Fahrenheit" );
52 double degreesFahrenheit =
53 terminal.readDouble( "degrees Fahrenheit: " );
54 terminal.println(" = "
55 + f2c.compute( degreesFahrenheit )
56 + " degrees Celsius" );
57 }
58 }
59 }
60
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Temperatures |
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