#include <iostream>
#include <fstream>
using namespace std;
int main()
{
	ifstream infile("in.txt");
	ofstream outfile("out.txt");
	bool done = false;
	int menu=3, item;
	while (!done)
	{
		cout << "1. Read from and write to file\n";
		cout << "2. Exit\n";
		cin >> menu;
		switch (menu)
		{
		case 1:
			while (infile >> item)
			{
				cout << item << endl;
				for (int i = 0; i < 5; i=i+2)
				{
					item++;
					cout << item << "\t";
					outfile << item << "\t";
				}//for
				cout << endl;
				outfile << endl;
			}//while
			infile.close();
			outfile.close();
			cout << "done.\n";
				break;
		case 2:
			done = true;
			break;
		default:
			break;
		}//switch
	}//while

    return 0;
}//main