import java.util.Scanner;


public class UnitConversions
{

    public static void main(String[] args)
    {
        Scanner in = new Scanner(System.in);

        double unitTotal = 0;

        System.out.println("Please enter a value:");
        String unitValue = in.nextLine();
        double doubleUnitValue = Double.valueOf(unitValue);

        System.out.println("Please enter a conversion type: \nGL for Gallons to Liters \nIC for Inches to Centimeters \nPK for Pounds to Kilograms \nMK for Miles to Kilometers");
        String unitType = in.nextLine();

        if(unitType == "GL")
        unitTotal = doubleUnitValue * 3.79;
        System.out.println(doubleUnitValue + " Gallons = " + unitTotal + " Liters.");
        //if(unitType == "IC")
            //unitTotal =

    }

}