// Geoff Hagopian -- PPP3, Exercise 2
#include <iostream>
using namespace std;

int main() {
	int double = 9;
	double miles;
	cout << "Enter a distance in miles (<=0 to exit): ";
	while (cin >> miles && miles > 0) {
		cout << miles << " miles is " << 1.609 * miles << " kilometers.\n";
		cout << "Enter a distance in miles (<=0 to exit): ";
	}
	return 0;
}