Use of while loop & sentinel value to read and calculate statistics of a series of integer numbers.
Write a program that prompts the user to enter an integer, -9999 to stop. (-9999 is the sentinel value).
Read the valid data (i.e. not sentinel) using a while-loop one at a time and exit the loop once the sentinel value is entered. At the end of the program, you need to print the following statistics: count, average (double type), max and min values. Must avoid (a) division by zero, and (b) integer division that causes loss of accuracy in calculating average value.