// John Bent's CS 110 Hand-out 11
// Recursive main program.
// Borrowed, with permission, from Jerry Tutsch's CS367.
//
// What does this program do???

#include<iostream.h>

int main()
{
	char c = cin.get();
	if (c != '\n') {
		cout << c; 
		main ();
		//cout << c;
	} else cout << endl;
	return 0;
}