// SuperMarket.java - This program creates a report that lists weekly hours worked 
// by employees of a supermarket. The report lists total hours for 
// each day of one week. 
// Input:  Interactive
// Output: Report. 

import java.util.Scanner;


public class SuperMarket
{
   public static void main(String args[]) 
   {
      // Declare variables.
      final String HEAD1 = "WEEKLY HOURS WORKED";
      final String DAY_FOOTER = "          Day Total ";  // Leading spaces are intentional.
      final String SENTINEL = "done";     // Named constant for sentinel value. 
      double hoursWorked = 0;             // Current record hours.
      String hoursWorkedString = "";      // String version of hours
      String dayOfWeek;       // Current record day of week.
      double hoursTotal = 0;           // Hours total for a day.
      String prevDay = "";             // Previous day of week.
      boolean done = false;            // loop control
      Scanner input = new Scanner(System.in);
      // Print two blank lines.
      System.out.println(); 
      System.out.println(); 
      // Print heading.
      System.out.println(HEAD1);
      // Print two blank lines.
      System.out.println(); 
      System.out.println();

      // Read first record 
      System.out.println("Enter day of week or done to quit: ");
      dayOfWeek = input.nextLine();
      if(dayOfWeek.compareTo(SENTINEL) == 0)
         done = true;
      else
      {
         System.out.print("Enter hours worked: ");
         hoursWorkedString = input.nextLine();
         hoursWorked = Integer.parseInt(hoursWorkedString); 
         prevDay = dayOfWeek;
      }
      
         
      while(done == false)
      {  
          System.out.print("Enter day of week or done to quit: ");
          if(dayOfWeek != prevDay)
              System.out.println("\t\t" + DAY_FOOTER + hoursWorked);
          dayOfWeek = input.nextLine();
          if(dayOfWeek == SENTINEL)
              done = true;
          else
          {
              System.out.print("Enter hours worked: ");
              hoursWorked = Double.parseDouble(input.nextLine());
              prevDay = dayOfWeek;
          }
          hoursTotal = hoursTotal + hoursWorked;
      }
   
      System.out.println(DAY_FOOTER + hoursTotal);
               
      System.exit(0);

   } // End of main() method.
   
} // End of SuperMarket class.