C++で指定したフォルダのサイズを求めようとしていた

code.cpp

#include "stdafx.h" 
#include <iostream> 
#include <string> 
#include <filesystem> 
using namespace std; 
using namespace std::tr2::sys; 
  
void  getFoldersize(string rootFolder,unsigned long long & f_size) 
{ 
   path folderPath(rootFolder);                       
   if (exists(folderPath)) 
   { 
       directory_iterator end_itr; 
       for (directory_iterator dirIte(rootFolder); dirIte != end_itr; ++dirIte ) 
       { 
           path filePath(complete (dirIte->path(), folderPath)); 
           try { 
                  if (!is_directory(dirIte->status()) ) 
                  { 
                      f_size = f_size + file_size(filePath);                       
                  }else 
                  { 
                      getFoldersize(filePath,f_size); 
                  } 
           } 
           catch(exception& e){  cout << e.what() << endl; } 
        } 
   } 
} 
  
int _tmain(int argc, _TCHAR* argv[]) 
{ 
    unsigned long long f_size = 0; 
    getFoldersize("C:\\", f_size); 
    cout << f_size << endl; 
    system("pause"); 
    return 0; 
}