ft_memcpy

void                *ft_memcpy(void *dest, const void *src, size_t count)
{
    unsigned char   *d;
    unsigned char   *s;
    size_t          i;

    i = 0;
    if (!dest && !src && count)
        return (NULL);
    d = (unsigned char*)dest;
    s = (unsigned char*)src;
    while (i < count)
    {
        d[i] = s[i];
        i++;
    }
    return (d);
}