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![Baris Derin](https://secure.gravatar.com/avatar/38d956fe572dc84f44bddc8f04bbaf2a?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Baris Derin
Courses Plus Student 443 Points<stdio.h>
I didn't fully understand "stdio.h" file. Is it something we should write? Or xcode writes it for us? If it is a system file why we have to indicate it?
1 Answer
![Sebastian Döll](https://secure.gravatar.com/avatar/ccf1bca768a440018262dbea97965560?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Sebastian Döll
24,464 PointsIt is the standard C library for input/output operations. If you import this to your app you can use the provided C methods to access files, to access the console etc. You do not have to write it, it is provided to you by the system or included.
Baris Derin
Courses Plus Student 443 PointsBaris Derin
Courses Plus Student 443 PointsOkay, i understand know. Thanks for your answer.