I'm trying to run a simple C code when the pi boots, so I followed the steps on the documentation (<https://www.raspberrypi.org/documentation/linux/usage/rc-local.md>), but when I start it, it shows this error: 

```
Failed to start etc/rc.local compatibility.
See 'systemctl status rc-local.service' for details.

```

I do as it says and I receive this:

```
rc-local.service - /etc/rc.local Compatibility
Loaded: loaded (/lib/systemd/system/rc-local.service; static)
Drop-In: /etc/systemd/system/rc-local.service.d
         ttyoutput.conf
Active: failed (Result: exit-code) since Tue 2015-12-08 10:44:23 UTC; 2min 18s ago
Process: 451 ExecStart=/etc/rc.local start (code=exit, status=203/EXEC)

```

My rc.local file looks like this:

```
./home/pi/server-starter &

exit 0

```

Can anyone show me what I'm doing wrong?