[Dev-C++] Question about working directory in Win2k

[David M. <dml...@co...>]

When I run the following program on win2k pro it has no problem finding 
the input file because when I drag a file on to it windows gives it the 
absolute filename. The problem is the executable & the input file are in 
a folder on the E drive and the output file is written to c:\Documents 
and Settings\david\ . Why do I have to specify the absolute filename 
just to get the working directory to the one as the executable? I have 
an explorer window open to e:\primes and I drag the input file onto the 
executable's icon. The program shows no errors, the output is just in 
the wrong place. Any simple way to fix?

#include <iostream>
#include <algorithm>
#include <iterator>
#include <fstream>
#include <iomanip>
#include <cstdio>

using namespace std;

char tmp_file[] = "1234.txt";

int main(int argc, char *argv[])
{
  if(argc == 2)
  {
    cout << "Opening " << argv[1] << endl;
    ifstream read_from(argv[1]);
    ofstream write_to(tmp_file);
    int temp, count = 0;
   
    while(!read_from.eof())
    {
      read_from >> temp;
      write_to << temp << endl;
      count++;
    }
   
    read_from.close();
    write_to.close();
   
    //remove(argv[1]);
    //rename(tmp_file, argv[1]);
    cout << "Done." << count << endl;    
  }
  else
  {
    cout << "Invalid number of arguments\n";
  }
  cin.get();
}