creating file name from column data

[tatai]

I have 3 files like this

file 1: ID.txt (43000 row data, one column)

file 2: MORECS.txt (201 row data, one column)
file 3: is the input for 201 files located in the folder cumulative.

my problem is:
when the row data in file 2 is 1 it should open file 1 from the cumulative folder and copy the entire file and store as the first row number of file 1 and so on. I have made the code like this, but it is not working!!

  #include<iostream>
#include<fstream>
#include<string>
#include<direct.h>
#include<sstream>

using namespace std;

void main()

{
  
   int d,m,y,ju;
	float min, max, ppt;
	float dummy;

	string Array[10];
	string Morecs[10];
	
	ifstream myfile ("ID.txt");
	ifstream more ("morecs.txt");
	
	
	for (int i = 0; i < 10; i++)
		{
		getline (more,Morecs[i]);
		
		stringstream weather;
		weather<<"cumulative"<<"/"<<"MORECS_GRID_"<<Morecs[i]<<".wth";
		string weatherfile = weather.str();
			
		ifstream morecsgrid(weatherfile);
		   
		   for(int j = 0; j< 10; j++)
			{
		
		getline (myfile,Array[j]);
	
	        stringstream oo;
			oo <<"weather_"<< Array[j] <<".wth"<< endl;
			string outfile=oo.str();
           
			ofstream weather_ID(outfile);
			cout<<outfile;

		
		while(morecsgrid>>d>>m>>y>>ju>>min>>max>>ppt>>dummy>>dummy>>dummy>>dummy>>dummy)
		{
			weather_ID<<d<<'\t'<<m<<'\t'<<y<<'\t'<<ju<<'\t'<<max<<'\t'<<min<<'\t'<<ppt<<" "<<dummy<<'\t'<<dummy<<'\t'<<dummy<<'\t'<<dummy<<'\t'<<dummy<<endl;
		}

		cout<<weatherfile;
			}
	 }
	system("pause");
	}