What is a buffer in c++?

[vigonoid]

Hello and happy new year

While going through some of the solutions to problems on CodeChef, I noticed that in most of the solutions(C++) a buffer is used. Could anyone please explain to me as to what a buffer actually is and when is it used. What role does it play in increasing the IO speed?

Cheers,

Vignesh

[squal]

@vigonoid: HAPPY NEW YEAR -_-

You can find about buffer in the following links:

1. link1

2. link2

[vigonoid]

Thanks squal