itoa.cc

inline int abs(int n) { return (n < 0) ? -n : n; }

char* itoa(int Value, int Base) {
    static const char lookup[] = "0123456789ABCDEF";
    static const size_t bufferSize = 65;
    static char buf[bufferSize] = {0};
    int i = bufferSize - 1;
    int n = Value;

    do {
        buf[--i] = lookup[abs(n % Base)];
    } while (n /= Base);

    if (Base == 10 && Value < 0) buf[--i] = '-';

    int len = bufferSize - i;
    char* ascii = new char[len];
    while (--len >= 0) {
        ascii[len] = buf[i + len];
    }

    return ascii;
}