Answer:
No, any special user input could work.
No, any special user input could work.
Sometimes a program asks the user if the loop should continue before each iteration. The user enters "yes" or "no" (or maybe "y" or "n").
Now the sentinel is of type String.
The next example illustrates this:
Say that you are interested in the value of this polynomial for various values of x:
7x3- 3x2 + 4x - 12
The variable x is double precision.
For example, when x == 2.0 the polynomial is equal to:
7*23- 3*22 + 4*2 - 12 = 7*8 - 3*4 + 8 - 12 = 40
The program asks the user to enter various values for x and displays the result for each one.
Would using a special value of x (such as 0.0) work as a sentinel?