A good answer might be:

Yes---Each group will be followed by the sentinel.

Here is how the previous file (for the two groups of students) will look if the sentinel method is used:

         
87
98
95
-1      
78
82
91
84
-1

You have reached the end of the chapter. You may wish to review the following. Click on a blue subject that interests you to go to where it was discussed. To get back here, click on the "back arrow" button of your browser.

• Three types of input loops.
• Example of a input counting loop.
• Common errors with input counting loops.
• Groups of input data in one file.
• Example program with two groups of data.
• Sentinel controlled input loop.
• Danger with using a sentinel controlled loop.
• Example program using a sentinel controlled loop.