Question

I need to convert an unsigned long to a string in a base “b” in ascii.

I receive the long, and the base (0 < b < 16), and i need to set it in a buffer.
Any idea how to do that, without itoa()??

Cumps

Answer 1

Sure – it’s trivial (sadly, I currently can’t compile the code so there are probably a couple of typos):

std::string convert(unsigned long value, unsigned long base) {
    std::string rc;
    do {
        rc.push_back("0123456789abcde"[value % base]);
    } while (base - 1? value /= base: value--);
    std::reverse(rc.begin(), rc.end());
    return rc;
}