Question

what is the buffer in c++ ? what does it mean?

Answer 1

I am learning C++ and I found something that I can't understand:

Output buffers can be explicitly flushed to force the buffer to be written. By default, reading cin flushes cout; cout is also flushed when the program ends normally.
So flushing the buffer (for example an output buffer): does this clear the buffer by deleting everything in it or does it clear the buffer by outputting everything in it? Or does flushing the buffer mean something completely different? please marks as brilliant