1.  In the code to process an Employee, the statement

         emp = Employee.readIn ( );

    occurs one or more times.  In the following code indicate
    clearly everywhere that this line should be placed.

         Employee emp;
        
         int hours;

         while ( emp != null )   {

              System.out.flush ( );
 
              hours = Integer.parseInt (br.readLine ( ) );

              System.out.println ( emp.calcPay ( hours ) );

         }


For the answers to questions 2 and 3, select from the following list
of options:

for            short-circuit        break            header
extreme        continue             iteration        accumulator

2.  The text says that a __________ statement "can be downright
    dangerous, particularly when used in a while statement.

3.  The text says of a __________ statement:  "Although there may be
    some occasions when using the ... statement is justified, we
    caution beginning and intermediate programmers not to employ it."


4.  Suppose we were defining a class that had several methods that
    needed to calculate the value of one non-negative integer (x)
    raised to the power of another non-negative integer (y).  
    Complete the helper method below.

         private int power ( int x, int y )  {  
            // y >= 0 returns x^y 

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