Just like with C, you can declare a function to have a specific return type.
You can specify many return types, including int, long, bool and float.
For debugging purposes, have a look at the Sample Programs\NXT\NXT Feature Samples\Debug Stream.c
program. I use this extensively.
| Some people, when confronted with a problem, think, "I know, I'll use threads,"
| and then two they hav erpoblesms. (@nedbat)
| My Blog: I'd Rather Be Building Robots
| ROBOTC 3rd Party Driver Suite: [Project Page