QUESTION 22:
Suggest a few other values with which the program should be tested.
Will the program work if the user enters a zero?
It should, since zero has a square root.
It is good to get into the habit of worrying about what happens with special values. The program does happen to work with zero. Here is the output of the program for several other values:
C:\chap19>java SquareRoot Enter the number: 0.0000000000000000000003 The square root of 3.0E-22 is 1.732050807568877E-11 C:\chap19>java SquareRoot Enter the number: -12 Please enter a positive number C:\chap19>java SquareRoot Enter the number: 144.0 The square root of 144.0 is 12.0
Suggest a few other values with which the program should be tested.