Danov Homework Ex

Valeri173

Oct 20th, 2020

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import java.util.*; // for Scanner
public class BMICalculator {
public static void main(String[] args) {
Scanner console = new Scanner(System.in);
printIntroduction();
double bmi1 = getBMI(console);
double bmi2 = getBMI(console);
String status1 = getStatus(bmi1);
String status2 = getStatus(bmi2);
reportResults(1, bmi1, status1);
reportResults(2, bmi2, status2);
System.out.println("Difference = " + round(Math.abs(bmi1 - bmi2), 2));
}
// Prints an introduction for the program.
public static void printIntroduction() {
System.out.println("This program reads in data for two people and");
System.out.println("computes their body mass index (BMI)");
System.out.println();
}
// Prompts for height and weight; calculates and returns
// body mass index.
public static double getBMI(Scanner console) {
System.out.println("Enter next person's information:");
System.out.print("height (in inches)? ");
double height = console.nextDouble();
System.out.print("weight (in pounds)? ");
double weight = console.nextDouble();
System.out.println();
return bmiFor(weight, height);
}
// Calculates and returns body mass index based on weight and height
public static double bmiFor(double weight, double height) {
return weight / Math.pow(height, 2) * 703;
}
// Calculates and returns the bmi class based on a
// chart published by the Centers for Disease Control and Prevention
public static String getStatus(double bmi) {
if (bmi < 18.5) {
return "underweight";
} else if (bmi < 25) {
return "normal";
} else if (bmi < 30) {
return "overweight";
} else {
return "obese";
}
}
// Prints bmi and bmi status for a person.
public static void reportResults(int person, double bmi, String status) {
System.out.println("Person " + person + " BMI = " + round(bmi, 2));
System.out.println(status);
}

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