Introduction - If you have any usage issues, please Google them yourself
1. Define function input Enter the array data
2. Define the function average to find the array average
3. Defines the function count to count the number of array elements above the average
4. The main function calls these functions to accomplish the following functions (see running results):
Enter array: 8 7 6 5
Average: 6.50
Higher than the average number: 2
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