Having trouble with program (value return)

Question

getting this error msg when i compile
could someone help me out, im lost, thanks a bunch
Prog4.java:57: '.class' expected
                    double prem_bill = premium_bill(int day, int night);
^
Prog4.java:57: ')' expected
                    double prem_bill = premium_bill(int day, int night);
import javax.swing.JOptionPane;
import java.text.DecimalFormat;
import java.util.Scanner;
public class Prog4
     public static void main(String[] args)
          String name, input;
          char serv_code;
          int acct_num, day_mins, night_mins;
          for (int count = 1; count <= 5; count++)               //looping construct-will run 5 times
               //Get name
                    name = JOptionPane.showInputDialog("What is your name?");
               //Get acct_num
                   input = JOptionPane.showInputDialog("What is your account number?");
               //Convert input to integer
                    acct_num = Integer.parseInt(input);
               //Get serv_code                                                  
                    input = JOptionPane.showInputDialog("Service code? (R-Regular, P-Premium)");     
                    serv_code = input.charAt(0);          
               //Validate serv_code
                    while ((serv_code != 'R') && (serv_code != 'r') && (serv_code != 'P') && (serv_code != 'p'))
                         input = JOptionPane.showInputDialog("Error. (R-Regular, P-Premium)");     
                         serv_code = input.charAt(0);     
               //Get minutes
                    if (serv_code == 'R' || serv_code == 'r')
                         input = JOptionPane.showInputDialog("How many minutes were used in the day?");
                         day_mins = Integer.parseInt(input);               
                         regular_bill(day_mins);
                       double reg_bill = regular_bill(day_mins);
               //Display output(regular)
                         System.out.println("Hello " + name + ".");
                         System.out.println("Your account number is " +  acct_num + ".");
                         System.out.println("Your service type is " +  serv_code + ".");
                         System.out.println("Number of minutes used was " + day_mins + ".");
                         System.out.println("Your total is " + reg_bill + ".");
                    else
                         input = JOptionPane.showInputDialog("How many minutes were used in the day?");
                         day_mins = Integer.parseInt(input);
                         input = JOptionPane.showInputDialog("How many minutes were used in the night?");
                         night_mins = Integer.parseInt(input);
                         premium_bill(day_mins, night_mins);
                         int total_mins = day_mins + night_mins;
                       double prem_bill = premium_bill(int day, int night);
               //Display output (premium)
                         System.out.println("Hello " + name + ".");
                         System.out.println("Your account number is " +  acct_num + ".");
                         System.out.println("Your service type is " +  serv_code + ".");
                         System.out.println("Number of minutes used was " + total_mins + ".");
                         System.out.println("Your total is " + prem_bill + ".");
     public static double regular_bill(int day)
          double result;          //Local variable
               if (day > 50)
                    result = (((day - 50) * .2) + 10);
               else
                    result = 10;
               return result;
     public static double premium_bill(int day, int night)
          double result, day_total, night_total;          //Local variables
               if (day > 75)
                    day_total = (((day - 75) * .1) + 10);
               else
                    day_total = 25;
               if (night > 100)
                    night_total = (((night - 100) * .05) + 10);
               else
                    night_total = 25;
                    result = (day_total + night_total);
               return result;
}Edited by: dallasCowMavs on Mar 9, 2008 8:37 PM
Edited by: dallasCowMavs on Mar 9, 2008 8:42 PM

Answer 1

Your problem is that you cannot call a method by initializing variables.
the method call: double prem_bill = premium_bill(int day, int night); is wrong.
You should replace it with this one: double prem_bill = premium_bill(day_mins, night_mins); assuming this is how you want the program to run. Otherwise, just use other variables that have already been initialized.
In short, consider the following method: public void method(int a, int b);
incorrect method call: method(int c, int d).
correct method call: method(5,9);
correct method call:
int c = 5, d = 9;
method(c,d);
I hope that was helpful