#include <iostream.h>
#include <fstream.h>
int main () {
	char s[100];
	
	ofstream TestOutput ("output.data", ios :: out);
	ifstream TestInput ("input.data", ios :: in);
	if (!TestOutput) cout << "output.data not attached\n";
	if (!TestInput) cout << "input.data not attached\n";
	
	cout << "Enter a string: ";
	TestOutput << "Enter a string: ";
	while (true) {
		cin.getline (s, 100, '\n');
	
		TestInput.getline (s, 100, '\n');
		
		if (TestInput.eof()) {
			cout << "end of file" << endl;
			TestOutput << "end of file" << endl;
			TestOutput.close();
			return 0;
		};
		cout << "You entered: \"" << s << "\"" << endl;
		cout << "next string: ";
		TestOutput << "You entered: \"" << s << "\"" << endl;
		TestOutput << "next string: ";
		TestOutput.flush();
	}
	cout << "End of File" << endl;
	TestOutput << "End of File" << endl;
	TestOutput.close();
	return 0;
}

/*
Enter a string: This a test
You entered: "This is a string"
next string: And another
You entered: "And this is another"
next string:                         // a CR on standard input
You entered: ""
next string:                         // another CR on standard input
end of file                          // should have found EOF on input.data sooner
*/
/*		input.data
This is a string
And this is another
*/
/*		output.data
Enter a string: You entered: "This is a string"
next string: You entered: "And this is another"
next string: You entered: ""                  // not so on input.data
next string: end of file                      // finally found the EOF
*/
/*
This example illustrates that the structure of a file can be:
First Line\n
Other lines\n
Last Line\n
\nEOF

Clearly you have to watch for this, since it is possible to construct
files without two \n\n at the end.  That is, finishing Last Line\nEOF

*/