#include <iostream>
# include <fstream>
using namespace std;


int main ()
{
	int number = 0;

	ofstream outFile;
	outFile.open("numbers.txt", ios::out);

	if (outFile.is_open())
	{
		cout << "enter number to be added to 'numbers.txt', or a letter to exit" << endl<< "**note ODD numbers will be excluded**" << endl;
		cin >> number;
		//int.erase('1'); //////was using this to test getting rid of '1'
		outFile << number << endl;
		
	}
	outFile.close();
 
}
 

// Filters out all number except even ones
void FilterEven( ifstream& input, ofstream& output )
{ int i;
  while( /* input has not reached the end of file */ )
  { // read an integer

    // if it is even, write it to output
  }
}

int main()
{ ifstream input("input.txt");
  ofstream output("output.txt");
  
  FilterEven(input,output);
  
  input.close();
  output.close();
  return 0;
}