this post was submitted on 05 Apr 2025
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[–] [email protected] 40 points 3 days ago (1 children)

std::endl is used in output streams in C++ to end the line, using the os specific line termination sequence, and flush the buffer.

The later one is a performance issue in many cases, why the use of "\n" is considered preferred

[–] [email protected] 2 points 3 days ago (2 children)

Don’t most terminals flush the buffer on newline anyway?

[–] [email protected] 7 points 3 days ago

It is the stream itself that is buffered, so the terminal does not handle the contents until the stream is flushed.

[–] [email protected] 2 points 3 days ago

Maybe, but there is the internal buffer. Also, most I/O happens in files not consoles