Data and Expressions - Java Software Solutions: Foundations of Program Design - page 79

Because the right-hand expression is evaluated first, the original value of count is
obtained and the value 1 is added to it, producing the result 16. That result is then
stored in the variable count , overwriting the original value of 15 with the new value of
16. Therefore, this assignment statement increments, or adds 1 to, the variable count .
Let's look at another example of expression processing. The program in Listing 2.7,
called TempConverter , converts a particular Celsius temperature value to its equiva-
lent Fahrenheit value using an expression that computes the following formula:

9
5

Fahrenheit = Celsius + 32

LISTING 2.7

//********************************************************************
// TempConverter.java Author: Lewis/Loftus
//
// Demonstrates the use of primitive data types and arithmetic
// expressions.
//********************************************************************

public class TempConverter
{
//-----------------------------------------------------------------
// Computes the Fahrenheit equivalent of a specific Celsius
// value using the formula F = (9/5)C + 32.
//-----------------------------------------------------------------
public static void main (String[] args)
{
final int BASE = 32;
final double CONVERSION_FACTOR = 9.0 / 5.0;

double fahrenheitTemp;
int celsiusTemp = 24; // value to convert

fahrenheitTemp = celsiusTemp * CONVERSION_FACTOR + BASE;

System.out.println ("Celsius Temperature: " + celsiusTemp);
System.out.println ("Fahrenheit Equivalent: " + fahrenheitTemp);
}
}

OUTPUT

Celsius Temperature: 24
Fahrenheit Equivalent: 75.2