c++ file IO without newline?

PatrickNew · 12-30-2006, 07:40 PM

Okay, I'm almost certain that this is going to wind up being very simple, but for some reason I just can't think of it. I'm writing a c++ program using fstream to do file output. Every time I use the << operator to write to the file it tacks on a newline. What function/options do I need to use to eliminate the newline, so that after numerous writes, the program is still just one line? (Not intended to be human readable)

tuxdev · 12-30-2006, 07:54 PM

Are you using std::endl? That would explain it.

PatrickNew · 12-30-2006, 08:07 PM

Ah, yep. Thanks much.

ta0kira · 12-31-2006, 03:24 PM

<< inherently sends formatted output (like screen output) to the file. This passes the output through a locale first so that numbers leave as text, etc. If you don't intend to write text and you want to specify the exact bytes written (e.g. 1 is written as 0x01 and not "1") you should open with the std::ios::binary open mode and use the write() function with the fstream.
ta0kira