Do the following code in C$.$

First you need to create $3$ files and writing the content of the files from standard input. You need to use $3$ type of buffering for these files $($ Fully buffered for file $1,$ Line buffered for file $2,$ and Unbuffered for file$3)$

The following is the content of the file:

$-$Open for reading and appending $($writing at end of file$).$ The file is created if it does not exist. Output is always appended to the end of the file. POSIX is silent on what the initial read position is when using this mode. For glibc, the initial file position for reading is at the beginning of the file, but for Android$/$BSD$/$MacOS$,$ the initial file position for reading is at the end of the file.

Then you are supposed to read the file and display their content on the screen using $3$ different types of buffering.