#include <iostream>
#include <string>

using namespace std;

string convBase(unsigned long v, long base)
{
	string digits = "0123456789abcdef";
	string result;
	if((base < 2) || (base > 16)) {
		result = "Error: base out of range.";
	}
	else {
		do {
			result = digits[v % base] + result;
			v /= base;
		}
		while(v);
	}
	return result;
}

int main()
{
	unsigned long x = 64206;
	cout << "Hex:     " << convBase(x,16) << endl;
	cout << "Decimal: " << convBase(x,10) << endl;
	cout << "Octal:   " << convBase(x,8) << endl;
	cout << "Binary:  " << convBase(x,2) << endl;
	cout << "Test:    " << convBase(x,32) << endl;
	return 0;
}