Regarding sprintf() with larger strings...

I've several hundred lines of data in a file and I'm looking to make each one 363 characters in length, preferably by adding spaces to the end. The sprintf() function has worked in all cases for me but this one. I've come to the conclusion that there is a limit, character-wise, for the sprintf() function (and concatenation, as well, now that I've tried it). Any insight would be greatly appreciated...

God, that was a dumb moment. My text editor was only showing the first 200 characters of each string. Disregard all the garbage above...