#include <iostream>
#include <string>

#include "digits.h"

using namespace std;

int main () {
    int i;
    char digit;
    int convertBack;

    // first test the good digit conversion.
    for (i=0;i<36;i++) {
        digit = DigitToChar(i);
	convertBack = CharToDigit(digit);
	cout << i << " becomes " << digit << " which is " << convertBack;
	if (i != convertBack) {
	   cout << " but there was an error, " << i << " is not " 
	        << convertBack;
	}
	cout << endl;
    }

    return 0;
}