Question

Programming question: Really need help!

(Health application: computing BMI) Body Mass index (BMI) is a measure of health on weight. It can be calculated by taking your weight in kilograms and dividing by the square of your height in meters. Write a program that read three persons’ weight and height in pounds and inches, respectively, and calculate BMI for each person, then output each person’s weight (pounds), height (inches), and BMI to a file. Note that one pound is 0.45359237 kilograms and one inch is 0.0254 meters.

Answer 1

I just need help with coding this. Thanks.

Answer 2

@tejasvir

Answer 3

import java.util.Scanner;

public class MeasureBmi{
public static void main(String[] args){
final double kilograms_per_pound = 0.45359237 kg
final double meters_per_inch = 0.0254 m
double weight1, weight2, weight3
double height1, height2, height3

Scanner input=new Scanner(System.in);
weight1=input.nextDouble();
weight2=input.nextDouble();
weight3=input.nextDouble();
height1=input.nextDouble();
height2=input.nextDouble();
height3=input.nextDouble();
double weight1=weight1*weight1*kilograms_per_pound
double weight2=weight2*weight2*kilograms_per_pound
double weight3=weight3*weight3*kilograms_per_pound
double height1=height1*height1*meters_per_inch
double height2=height2*height2*meters_per_inch
double height3=height3*height3*meters_per_inch
System.out.println("Weight\tHeight")
System.out.println(weight1+"\t"+height1)
System.out.println(weight2+"\t"+height2)
System.out.println(weight3+"\t"+height3)
}
}

Answer 4

well the first problem is in the decleration of your variables. you cant have kg tehre. kg isnt a valid java identifier.

Answer 5

nor can you have meters there

Answer 6

i removed both kg and m

Answer 7

okay and the next thing is you cant just say double weight 1 wihtough assigining it to a variable.

Answer 8

sorry to a value

Answer 9

and your missing a bagillion semicolons at the end of your arguments

Answer 10

fixed the semi-colons

Answer 11

im just going to fix the code for you first and then tell you your mistakes

Answer 12

alright. i'll keep working on the code too. thanks

Answer 13

import java.util.Scanner;

public class MeasureBmi{
public static void main(String[] args){
final double kilograms_per_pound = 0.45359237;
final double meters_per_inch = 0.0254;

Scanner input=new Scanner(System.in);
double weight1=input.nextDouble();
double weight2=input.nextDouble();
double weight3=input.nextDouble();
double height1=input.nextDouble();
double height2=input.nextDouble();
double height3=input.nextDouble();

weight1=weight1*weight1*kilograms_per_pound;
weight2=weight2*weight2*kilograms_per_pound;
weight3=weight3*weight3*kilograms_per_pound;
height1=height1*height1*meters_per_inch;
height2=height2*height2*meters_per_inch;
height3=height3*height3*meters_per_inch;
System.out.println("Weight\tHeight");
System.out.println(weight1+"\t"+height1);
System.out.println(weight2+"\t"+height2);
System.out.println(weight3+"\t"+height3);
}
}

Answer 14

if you are trying to change the value of weight 1 you cant say double weight 1 = weight1*weight1*kilograms_per_pound; you need to remove the double part of it.

Answer 15

yeah, my prof did it that way so idk why

Answer 16

hmm i dont think so.. re check the notes.

Answer 17

it should work now .

Answer 18

no errors, but i'm still trying to base it on the question. it says i have to take my weight in kilograms and dividing by the square of my height in meters, and doing so for 3 people.

Answer 19

idk man.

Answer 20

i'll see what i can do, thanks though