Question: Write a program to copy a file from a source to destination using POSIX API. Your program should account for the option to copy directories.

Write a program to copy a file from a source to destination using POSIX API. Your program should account for the option to copy directories.
Hints:
Include fcntl.h
system calls to consider: creat, open, read, write, exit
For directories dirent.h is useful to include, system calls to consider: opendir, readdir
Do not use standard library (i.e. do not include stdlib.h nor use fopen,....etc. This defies the objective of the assignment.

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