int myItoa(uint8_t i, char* str, int size) {
    int j = size - 1;

    for(; i && j ; j--, i /= 10)
        str[j] = "0123456789"[i % 10];
    return j;
}

int myItoa2(int8_t i, char* str, int size) {
    int j = size - 1;

    int icpy = i < 0 ? -i : i;
    for(; icpy && j ; j--, icpy /= 10)
        str[j] = "0123456789"[icpy % 10];
    if (i < 0)
      str[j--] = '-';
    return j + 1;
}

void write3( char a, uint8_t b, int8_t c )
{
    /* your code goes here */
    write(1, &a, 1);
    write(1, "\n", 1);

    char str[32];
    int index = myItoa(b, str, 32);
    write(1, str + index, 32 - index);
    write(1, "\n", 1);

    index = myItoa2(c, str, 32);
    write(1, str + index, 32 - index);
    write(1, "\n", 1);

    /* avoid 'unused parameter' warning */
    (void)a;
    (void)b;
    (void)c;
}