Using the Design Recipe and NetBeans construct an algorithm
Using the Design Recipe and NetBeans, construct an algorithm, and then write a Java program based on the algorithm, to solve each of the following problems:
Science: wind-chill temperature) How cold is it outside? The temperature alone is not enough to provide the answer. Other factors including wind speed, relative humidity, and sunshine play important roles in determining coldness outside. In 2001, the National Weather Service (NWS) implemented the new wind-chill temperature to measure the coldness using temperature and wind speed. The formula is
where ta is the outside temperature measured in degrees Fahrenheit and v is the speed measured in miles per hour. twc is the wind-chill temperature. The formula cannot be used for wind speeds below 2 mph or temperatures below -58 °F or above 41 °F.
Write a program that prompts the user to enter a temperature between -58 °F and 41 °F and a wind speed greater than or equal to 2 and displays the wind-chill temperature.
Use Math.pow(a, b) to compute v0.16.
Make sure your program declares and uses named constants for:
the term 35.74
the factors 0.6215, 35.75, 0.4275
the exponent 0.16
Sample Run (user input in color):
run:
Enter the temperature in Fahrenheit between -58F and 41F: 5.3
Enter the wind speed (>=2) in miles per hour: 6
The wind chill index is -5.6
BUILD SUCCESSFUL (total time: 10 seconds)
Solution
WindChillTest.java
import java.text.DecimalFormat;
import java.util.Scanner;
public class WindChillTest {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
System.out.println(\"Enter the temperature in Fahrenheit between -58F and 41F: \");
double T = scan.nextDouble();
System.out.println(\"Enter the wind speed (>=2) in miles per hour: \");
int V = scan.nextInt();
//formula 35.74 + 0.6215T - 35.75(V0.16) + 0.4275T(V0.16)
double windChill = 35.74 + 0.6215 * T - 35.75* Math.pow(V, 0.16) + 0.4275 * T* Math.pow(V, 0.16);
DecimalFormat df = new DecimalFormat(\"0.0\");
System.out.println(\"The wind chill index is \"+df.format(windChill));
}
}
Output:
Enter the temperature in Fahrenheit between -58F and 41F:
5.3
Enter the wind speed (>=2) in miles per hour:
6
The wind chill index is -5.6

