Create a few directories as shown below in your current directory (dir1, dir2, dir3, and dir4 in dir1, dir5 in dir2), a few files (file1 and file2 in current directory, file4 in dir4, and a soft-link link1 in dir5 (to link to file3).

You should use system call to do these tasks. For example, system("mkdir dir1"), etc.

dirl dir4 file4 dir2 dir5 link1 current dir dir3 file3 file1 file2