flush on close()?

[Philipp]

Hello, just a simple question:
Does the close() method of an ofstream object always flush the buffer?

Thanks for answers.
Phil

 

[Timothy Madden]

Hello, just a simple question:
Does the close() method of an ofstream object always flush the buffer?

Thanks for answers.
Phil

Of course it does ! No written characters or data are lost.

The operating system might not follow this same ideea. It is free to decide
that the file is on a fixed drive that won't go anywhere and that caching it
until the next disk write is worthy

Timothy Madden
Romania

 

[Mike Wahler]

Hello, just a simple question:
Does the close() method of an ofstream object always flush the buffer?

No, not always, but when needed (e.g. the last write operation
might have already caused a flush). You can be assured that
(barring errors) everything has been written after closing
an output stream.

-Mike