Answer:

No. In this defective fragment, the NOT (the !) applies directly to cost.

Precidence of NOT

The NOT operator has high precedence, so it is done before arithmetic and relational operators unless you use parentheses. Examine the following:

!cost < 50 
-----  
illegal: can't use ! on an arithmetic variable

Since ! has high precedence, the above says to apply it to cost. This which won't work, because cost is an integer and NOT applies only to boolean values.

QUESTION 25:

Look at this fragment:

if ( cost < 50  )
  System.out.println("Acceptable shoes");
else
  System.out.println("Reject these shoes");

Is the new fragment equivalent to the original fragment:

if (  !(cost < 50)  )
  System.out.println("Reject these shoes");
else
  System.out.println("Acceptable shoes");

Try a few trial costs with each fragment to see if they are equivalent.