#include <iostream.h>
#include <string.h>

const int MAX_LENGTH = 30;
typedef char stringType[MAX_LENGTH];

void writeBackward(stringType S, int Size) {
	if (Size > 0) {
		cout << S[Size-1];
		writeBackward(S, Size-1);
	}
}

void main() {
	stringType theString;
	cout << "Enter a string: ";
	cin.getline(theString, MAX_LENGTH);
	writeBackward(theString, strlen(theString));
}