Luke - 6 months ago 46

Java Question

I can't figure out what to put as I'm required to create the calculator with classes. Any help would be appreciated.

`import java.util.*;`

public class BMI

{

public static void main(String[] args)

{

heightInInches();

weightInPounds();

outputBMI();

}

public static void heightInInches()

{

Scanner input = new Scanner(System.in);

System.out.println("What is your height in feet between 2 and 7? " );

int feet = input.nextInt();

while (feet < 2 || feet > 7)

{

System.out.print("Retry between 2 and 7: ");

feet = input.nextInt();

}

System.out.println("How many inches between 0 and 11? " );

int inches = input.nextInt();

while (inches < 0 || inches > 11)

{

System.out.print("Retry between 0 and 11: ");

inches = input.nextInt();

}

int actualHeight = (feet * 12) + inches;

System.out.println("You are this tall in inches: " + actualHeight);

}

public static int weightInPounds()

{

Scanner input = new Scanner(System.in);

System.out.println("What is your weight in stone between 3 and 30? " );

int stone = input.nextInt();

while (stone < 3 || stone > 30)

{

System.out.print("Retry between 3 and 30: ");

stone = input.nextInt();

}

System.out.println("How many pounds between 0 and 13? " );

int pounds = input.nextInt();

while (pounds < 0 || pounds > 13)

{

System.out.print("Retry between 0 and 13: ");

pounds = input.nextInt();

}

int actualWeight =(stone * 14) + pounds;

System.out.println("You are this heavy in pounds: " + actualWeight);

return actualWeight;

}

public static void outputBMI(int heightInInches, int weightInPounds)

{

double BMI = (weightInPounds * 703) / (heightInInches * heightInInches);

System.out.println("This is your BMI: " + BMI);

}

}

It's where it says outputBMI(); I'm not quite sure what I'm supposed to put in these brackets as there's nothing I can put in there without it throwing an error at me.

Answer

```
import java.util.*;
public class Main
{
public static void main(String[] args)
{
int height = heightInInches();
int weight = weightInPounds();
outputBMI(height, weight);
}
public static int heightInInches()
{
Scanner input = new Scanner(System.in);
System.out.println("What is your height in feet between 2 and 7? " );
int feet = input.nextInt();
while (feet < 2 || feet > 7)
{
System.out.print("Retry between 2 and 7: ");
feet = input.nextInt();
}
System.out.println("How many inches between 0 and 11? " );
int inches = input.nextInt();
while (inches < 0 || inches > 11)
{
System.out.print("Retry between 0 and 11: ");
inches = input.nextInt();
}
int actualHeight = (feet * 12) + inches;
System.out.println("You are this tall in inches: " + actualHeight);
return actualHeight;
}
public static int weightInPounds()
{
Scanner input = new Scanner(System.in);
System.out.println("What is your weight in stone between 3 and 30? " );
int stone = input.nextInt();
while (stone < 3 || stone > 30)
{
System.out.print("Retry between 3 and 30: ");
stone = input.nextInt();
}
System.out.println("How many pounds between 0 and 13? " );
int pounds = input.nextInt();
while (pounds < 0 || pounds > 13)
{
System.out.print("Retry between 0 and 13: ");
pounds = input.nextInt();
}
int actualWeight =(stone * 14) + pounds;
System.out.println("You are this heavy in pounds: " + actualWeight);
return actualWeight;
}
public static void outputBMI(int heightInInches, int weightInPounds)
{
double BMI = (weightInPounds * 703) / (heightInInches * heightInInches);
System.out.println("This is your BMI: " + BMI);
}
}
```

Try it here: https://repl.it/E5fv/0