Here's your approach for the log analyzer:
Open the input file for reading. Check success.
Initialize: sum = 0, count = 0, min = large, max = small.
Read values in a loop, updating sum, count, min, and max for each value.
Close input file.
Open output file for writing. Check success.
Write formatted report with count, min, max, and average (sum/count).
Close output file. Each step builds on file I/O cores.