用 Java 製作一個 BMI 計算器

BMI = (Weight in Kilograms) / (Height in Meters * Height in Meters)

package delftstack;

import java.util.Scanner;

public class Calculate_BMI {

   // method to check BMI
    public static String BMIChecker(double Weight, double Height) {

        // calculate the BMI
        double BMI = Weight / ( Height * Height) ;

        // check the range of BMI
        if(BMI < 18.5)
            return "Underweight";
        else if(BMI < 25)
            return "Normal";
        else if(BMI < 30)
            return "Overweight";
        else
            return "Obese";
    }

    public static void main(String[] args) {

        double Weight = 0.0f;
        double Height = 0.0f;
        String BMI_Result = null;

        Scanner scan_input = new Scanner(System.in);
        System.out.print("Please enter the weight in Kgs: ");
        Weight = scan_input.nextDouble();
        System.out.print("Pleae enter the height in meters: ");
        Height = scan_input.nextDouble();


        BMI_Result = BMIChecker( Weight, Height );

        System.out.println(BMI_Result);

        scan_input.close();
    }
}

Please enter the weight in Kgs: 79
Please enter the height in meters: 1.86
Normal