What is a buffer in c++?

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Hello and happy new year :slight_smile:

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

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@vigonoid: HAPPY NEW YEAR -_-

You can find about buffer in the following links:

  1. link1

  2. link2

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Thanks squal :slight_smile: