The program should take the directory name from where to start file traversal as a

command$-$line argument and list all files in the directory hierarchy.

$$ If the program is executed without any arguments, it should start from the current

working directory.

$$ If the program encounters other directories, it should list the directory name first,

followed by the files with one$-$tab indentation for each level of depth.

Symbolic Links

$$ If a file is a symbolic link, the program should display the symbolic link name and, in

parentheses, the file that the link points to$.$

Command$-$Line Options

The program should support the following options:

$-$S

List all files along with their sizes in parentheses next to their names.