Sunday, January 22, 2017

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Exercise 3.6 — Health Application: BMI

Java program ComputeAndInterpretBMI.java, to let the user enter weight, feet, and inches and calculate and interpret the user BMI whether underweight, normal, overweight or obese.

/**
 *
 * @Author: Aghatise Osazuwa
 * Website: www.cscprogrammingtutorials.com
 */

import java.util.Scanner;

public class ComputeAndInterpretBMI {
    public static void main (String [] args) {
        Scanner input = new Scanner(System.in);
        //Prompt the user to enter weight in pounds
        System.out.print("Enter weight in pounds: ");
        double weight = input.nextDouble();
        //Prompt the user to enter height in feet and inches
        System.out.print("Enter feet: ");
        double feet = input.nextDouble();
        System.out.print("Enter inches: ");
        double inches = input.nextDouble();
        double height = (feet * 12) + inches;
        final double KILOGRAMS_PER_POUND = 0.45359237; // Constant
        final double METERS_PER_INCH = 0.0254; // Constant
        //Compute BMI
        double weightInKilograms = weight * KILOGRAMS_PER_POUND;
        double heightInMeters = height * METERS_PER_INCH;
        double bmi = weightInKilograms / (heightInMeters * heightInMeters);
        // Display result
        System.out.println("BMI is " + bmi);
        if (bmi < 18.5) {
            System.out.println("Underweight");
        } else if (bmi < 25) {
            System.out.println("Normal");
        } else if (bmi < 30) {
            System.out.println("Overweight");
        } else {
            System.out.println("Obese");
        }
    }
}
Liang Introduction to Java Programming exercise 3.6 solution
Sample run
Click here to see other solutions to Introduction to Java Programming.

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