THIS IS WHAT MY PROGRAM SHOULD SHOW:
Please enter the representation to use: List, BST, Hash Maps
BST
Please enter a filename:
files.txt
File loaded successfully. 6 files loaded from the file in 0 seconds and 548 microseconds.

PROBLEM:
"0 seconds and 548 microseconds"
(CAN'T CALCULATE TIME TAKEN IN FILE LOADING)

I am new in c language and in...