float to hex

void FloatToHex(float x)
{
    // define the array to store the result
    char hex[9];
    unsigned int i = *((unsigned int*)&x);
    int count = 7;
    for(; count >= 0; count--)
    {
       hex[count] = hexDigits[i & 0xF];
       i = i >> 4;
    }
    hex[8] = '\0';
    printf("%s\n", hex);
}