Not sure the right wording but can I DEFINE an entire block of code with one Name?

[777funk]

I have a program with some pretty repetitive blocks of code (i.e Loop A, Loop B, Loop C, then Loop A again... etc) , is it possible to define an entire loop as a single line/function?

Say I have this:

{ 
  for(pos = 0; pos < 180; pos += 1)  // goes from 0 degrees to 180 degrees 
  {                                  // in steps of 1 degree 
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(15);                       // waits 15ms for the servo to reach the position 
  } 
  for(pos = 180; pos>=1; pos-=1)     // goes from 180 degrees to 0 degrees 
  {                                
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(15);                       // waits 15ms for the servo to reach the position 
  } 
}

Could I abbreviate that in some way so that I can call on it with a single line of code? i.e. Variable X=all of that in the code bracket, and if I want that to run I can just type an X in my main loop? I think that'd be defining a function but I'm not sure how to impliment it.

I've got a very messy program with lots of loops like the above that I'd like to neaten up a bit. Thanks for any advice/tips.

[Salem]

Yes, such blocks of code are called functions.

Eg.

void foo ( sometype myservo ) {
int pos;
{ 
  for(pos = 0; pos < 180; pos += 1)  // goes from 0 degrees to 180 degrees 
  {                                  // in steps of 1 degree 
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(15);                       // waits 15ms for the servo to reach the position 
  } 
  for(pos = 180; pos>=1; pos-=1)     // goes from 180 degrees to 0 degrees 
  {                                
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(15);                       // waits 15ms for the servo to reach the position 
  } 
}
}

You just look at whatever block of code you'd like to encapsulate, and figure out
- what the "input" is (in this case, perhaps the servo to use)
- what the "output" is (in this case, nothing)
- what can be declared as a local variable (in this case, pos)