// Tyler Rigsby, CSE 142
// Calcaluates the BMI of two people and reports statistics about them
import java.util.*;

public class BMI {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);

        intro();
                
        double bmi1 = getBMI(console);
        double bmi2 = getBMI(console);
        
        reportResults(bmi1, bmi2);
    }
    
    // handles reporting the results of the two people with their
    // specified BMIs.
    public static void reportResults(double bmi1, double bmi2) {
        System.out.println("Person 1's BMI is: " + round1(bmi1));
        getStatus(bmi1);
                
        System.out.println("Person 2's BMI is: " + round1(bmi2));
        getStatus(bmi2);
    }
    
    // prints the introduction to the program
    public static void intro() {
        System.out.println("This program reads in data for two people and");
        System.out.println("computes their body mass index (BMI)");
        System.out.println();
    }
    
    // prints the person's status given their bmi
    public static void getStatus(double bmi) {
        if (bmi < 18.5) {
            System.out.println("underweight");
        } else if (bmi < 25.0) {
            System.out.println("normal");
        } else if (bmi < 30.0) {
            System.out.println("overweight");
        } else { // if (bmi >= 30.0) {
            System.out.println("obese");
        }
    }

    // prompts and reads the height and weight of a person and 
    // returns their BMI
    public static double getBMI(Scanner console) {
        System.out.println("Enter next person's information");
        System.out.print("Enter height (in inches): ");
        double height = console.nextDouble();
        System.out.print("Enter weight (in pounds): ");
        double weight = console.nextDouble();
        
        // careful--don't round this, or you may use it incorrectly later
        return BMIFor(weight, height);
    }

    // Returns the BMI for a given weight and height based on the scientific formula
    public static double BMIFor(double weight, double height) {
        return 703 * weight / (height * height);
    }
    
    // returns the specified value rounded to one decimal place
    public static double round1(double val) {
        return Math.round(val * 10) / 10.0;
    }
}