Java question?

import java.util.Scanner;


import java.lang.Math;





public class cdstore


{


public static void main(String args[])


{











double A = 19.00;


double B = 17.00;


double C = 14.00;


double D = 12.00;


double E = 10.00;


double p;




















char z = ' ';


while(z!= 'x')


{





Scanner i = new Scanner(System.in);


System.out.println("Enter Letter");


String l = i.next();





if(l.equals("a") || l.equals("A"))


{p = A;}





else if(l.equals("b") || l.equals("B"))


{p = B;}





else if(l.equals("c") || l.equals("C"))


{p = C;}





else if(l.equals("d") || l.equals("D"))


{p = D;}





else if(l.equals("x") || l.equals("X"))


{System.out.println("subtotal = " + p);}





else


{System.out.println("incorrect value, please try again");}








z = l.charAt(0);








z = Character.toLowerCase(z);





}


}


}





i get an error with

Java question?
Java is quite sensitive with variable declaration


to get rid of the error regarding p





replace the line





double p;





with





double p = 0.0;








to get the subtotal you will need to accumulate the sales





use the ff





p += A;


p += B;


p += C;


p += D;