Car chasis with HC-SR04 sensor

Already modified :)

There must be something wrong with my tablet. Or with your understanding of "auto-format tool"

I actually just copy the code from arduino IDE and I select copy to forum then I paste everything here. Did I do mistakes ?

Thanks for pointing out to me if any :)

Did I do mistakes ?

Yes, several. First, you did NOT use Tools + Auto Format before copying the code. Second, DO NOT USE THE CRAPPY "Copy for forum" option. It sucks. Third, you are not posting the code between code tags.

Ok, thanks for pointing out my mistakes.

Will do better :)