You must have this header in your file
#include <stdlib.h>
and use this command in your c++ /C code to create a directory
system("mkdir MYDIRECTORY");
where MYDIRECTORY is the name of your directory
and to access this directory, just do
system("chdir MYDIRECTORY");

It will be nice if you can also send you input file.
I have tried to read the code but it is difficult to help without the input file.

Hi All,
I encoutering this problem when trying to compile my code.
list.h:10: error: ‘List’ is not a template
It seems like the problem comes from the declaration of my friend template class List in template class ListNode.
This my lis.h file
//-----------------------------------------------------------------------------
// class ListeNode
// contains the operations for class List
//-----------------------------------------------------------------------------...