* This program calculates a tax refund amount based on the income for the year and the number of children a person has
* The rules are:
*
* Income > 30000$ and <= 40000$ and ch >= 3, refund is 1000.0$ * ch
* Income > 20000$ and <= 30000$ and ch >= 2, refund is 1500.0$ * ch
* Income <= 20000$, refund is 2000.0$ * ch
*
* For example, if the income was 34312$ and the number of children (ch) was 7 then the tax refund would be: 1000*7 = 7000.0$
*
*/
import java.util.Scanner;

public class RefundAmount
{
public static void main(String[] args)
{
   System.out.println("Refund: " + refund(23000.0,2) + "   Expected: 3000.0") ;
   System.out.println("Refund: " + refund(17500.0,4) + "   Expected: 8000.0") ;
   System.out.println("Refund: " + refund(80000.0,9) + "   Expected: 0.0") ;
   System.out.println("Refund: " + refund(35000.0,5) + "   Expected: 5000.0") ;
   System.out.println("Refund: " + refund(35000.0,-1) + "   Expected: 0.0") ;
}

/**
Calculates the refund amount based on income and number of children.

@param income (double)
@param ch number of children (int)
@return refund amount (double)

return 0 unless:
Income > 30000$ and <= 40000$ and ch >= 3, refund is 1000.0$ * ch
Income > 20000$ and <= 30000$ and ch >= 2, refund is 1500.0$ * ch
Income <= 20000$, refund is 2000.0$ * ch

check to make sure ch > 0, return 0 if not
*/
//-----------Start below here. To do: approximate lines of code = 9
// write a static method called refund with the appropriate parameters and return type.