can anyone help me on how merge w/ this code im having difficulty on it..thankyou

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C++

Good day everyone!..
im having difficulty to merge this two program..in this code the data in the text file are tokenize it has the delimiter ","..

#include<iostream>
#include<conio.h>
using namespace std;

int main()
{
string str = "ako reiku xian"; 
size_t length;
char buffer[str.length()];
length=str.copy(buffer,str.length(),0);
buffer[length]='\0';
char *pch = buffer;

pch = strtok (pch," ");
while (pch != NULL)
{
cout<<pch<<",";
pch = strtok (NULL, " ");
}

//system("pause");
getch();
}

-------------------------------
in this code the program show only the folder name that is being saved in the text file but its not yet being tokenize w/ the delemiter of ","

#include<iostream>
#include <fstream>
#include <dirent.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>

using namespace std;

int main()
{
    ifstream fin;
    string dir, filepath, username, password;
    int num;
    DIR *dp;
    struct dirent *dirp;
    struct stat filestat;


    dir = "C:\\Users\\ROAN\\Desktop\\folder";

    cout<<"Enter username: ";
    getline( cin, username );
    cout<<"Enter password: ";
    getline( cin, password );

    dp = opendir( dir.c_str() );
    while ((dirp = readdir( dp )))
    {
          string un, pw, folder;
          filepath = dir + "/" + dirp->d_name;

          if (stat( filepath.c_str(), &filestat )) continue;
             if (S_ISDIR( filestat.st_mode ))      continue;

          fin.open( filepath.c_str() );

          if (getline( fin, un ) && getline( fin, pw ))
             if (un == username && pw == password)
             {
                getline(fin, folder);
                cout << folder << endl;

                //open folder
                /*C:\Users\ROAN\Desktop\folder*/
              //   system("start explorer C:\\Users\\ROAN\\Desktop\\folder\\");

              //  mkdir(dir);
             }

          fin.close();
    }

  closedir( dp );
  system("pause");
  return 0;

}