I have a large file that I need to put into an array - but I only need the
last hundred or so lines. The file is approx. 1100 lines total (20k). Is
it more efficient to use fgets in a situation like this? I'm wondering if
it's quicker to read into the array only the lines I need (fgets), rather
than converting the whole file into an array (file). Or is file quicker
since I don't need fopen?