I am using Java and doing a shipping charges calculator based on different weights and distances. We are practicing the if-else statements but I am running into a problem I can't figure out.
When I calculate different weights and distances I am getting the wrong answers.
I think it has something to do with my math where I can't seem to get the program to add the next charge for distance because it's not using the remainder. Please help me understand this.
public class ShippingCharges {
private double weight;
private double miles;
public ShippingCharges (double w, double m)
{
weight = w;
miles = m;
}
public double getShippingCharges()
{
double charges;
if (weight <= 2.0)
{ charges = (1.10 * miles / 500);
}
else if ((weight > 2.0) && (weight <= 6.0))
{
charges = (2.20 * (miles / 500 ));
}
else if ((weight > 6.0) && (weight <=10.0))
{
charges = (3.70 * (miles / 500 ));
}
else
{
charges = (4.80 * miles / 500);
}
return charges;
}
}
From what you said I understand the problem is you are not rounding up the miles/500 result, try this:
public double getShippingCharges()
{
double charges;
if (weight <= 2.0)
{ charges = (1.10 * Math.ceil(miles / 500));
}
else if ((weight > 2.0) && (weight <= 6.0))
{
charges = (2.20 * Math.ceil(miles / 500 ));
}
else if ((weight > 6.0) && (weight <=10.0))
{
charges = (3.70 * Math.ceil(miles / 500 ));
}
else
{
charges = (4.80 * Math.ceil(miles / 500));
}
return charges;
}