;Task: Write a program that will list everything in the current folder,   similar to: :::*   the Unix utility   “ls”   [http://man7.org/linux/man-pages/man1/ls.1.html]       or :::*   the Windows terminal command   “DIR
The output must be sorted, but printing extended details and producing multi-column output is not required. ;Example output For the list of paths:
/foo/bar
/foo/bar/1
/foo/bar/2
/foo/bar/a
/foo/bar/b
When the program is executed in   `/foo`,   it should print:
bar
and when the program is executed in   `/foo/bar`,   it should print:
1
2
a
b