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Middle Average

Specification: Read in integers until the user enters -1. If there were at least three integers, show the middle average and also show whether the sum of values is divisible by count. If there are less than three integers, print "No average to display".

Middle average is the average excluding the biggest and smallest number.

Sample I/O: Enter an integer ( 1 to exit): 1 Enter an integer (-1 to exit): 2 Enter an integer (1 to exit): 3 Enter an integer (-1 to exit): 4 Enter an integer (1 to exit): 6 Enter an integer (-1 to exit): 1 The middle average is: 3.0 The sum is not divisible by count