Chapter 2 Exercise 17, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY.

*2.17 (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 [Math Processing Error]${\displaystyle twc=35.74+0.6215\cdot ta-35.75\cdot v^{0.16}+0.4275ta\cdot v^{0.16}}$ 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 ºF or above 41ºF. Write a program that prompts the user to enter a temperature between -58 ºF and 41ºF and a wind speed greater than or equal to 2 and displays the wind-chill temperature. Use Math.pow(a, b) to compute [Math Processing Error]${\displaystyle v^{0.16}}$. Here is a sample run:

Enter the temperature in Fahrenheit between -58°F and 41°F:5.3
Enter the wind speed (>=2) in miles per hour: 6
The wind chill index is -5.56707 

import java.util.Scanner;
 
public class ProgrammingEx2_17 {
 
 public static void main(String[] args) {
  Scanner input = new Scanner(System.in);
 
  System.out
    .print("Enter the temperature in Fahrenheit between -58?F and 41?F:");
  double ta = input.nextDouble();
  System.out.print("Enter the wind speed (>=2) in miles per hour:");
  double v = input.nextDouble();
  double twc = 35.74 + 0.6215 * ta - 35.75 * Math.pow(v, 0.16) + 0.4275
    * ta * Math.pow(v, 0.16);
 
  System.out.print("The wind chill index is " + twc);
 
 }
}