Problem with wheat farm

Hi guys,

I just started using ComputerCraft last week, and i tryed now to program my own wheat farm program, but It isn´t even starting.
I don´t know how many mistakes i got, but please help me, pros :(/>/>
Thanks for help!
Here what i tryed to do:

function Tanken()
benzin = turtle.getFuelLevel()
if benzin < 5 then
  turtle.select(16)
  turtle.refuel(1)
  turtle.select(1)
end

function Ernten()
turtle.digDown()
turtle.select(1)
turtle.placeDown()
end
function Auswerfen()
slot= 2
while slot < 16 do
turtle.select(slot)
turtle.dropDown()
slot = slot+1
end

länge = 10+0
breite =  8+0
c = länge+1
while breite > 0 do
  while länge > 0 do
    Tanken()
    Ernten()
    länge = länge-1
    turtle.forward()
  end
 
  breite = breite-1
  länge = 10+0
 
  Tanken()
  turtle.turnLeft()
  turtle.forward()
  turtle.turnLeft()
  turtle.forward()
 
  while länge > 0 do
    Tanken()
    Ernten()
    länge = länge-1
    turtle.forward()
  end
 
  breite = breite-1
  länge = 10
 
  Tanken()
  turtle.turnRight()
  turtle.forward()
  turtle.turnRight()
  turtle.forward()
end
Tanken()
turtle.turnRight()
while c > 0 do
  Tanken() 
  turte.forward()
  c = c-1
end
Tanken()
turtle.turnRight()
turtle.forward()
Auswerfen()
Tanken()
turtle.turnLeft()
turtle.turnLeft()
turtle.forward()
Tanken()
shell.run("reboot")
	
		 

Noob

Well, you got one "end" too much (Line 15), also, where do you define b? (Line 45)
If it doesn't autorun, rename it to "startup" like so:

rename <filename> startup

I hope I helped.

Thanks for the fast answer!
Ok, "b" must be "länge".
But it is still not working.
I updated my first post.

Could you give the text some align, so it's easier to read?

Example:

if 1 < 2 then
print("1 is smaller then 2")
else
print("1 is not smaller then 2")
end

but instead you do

if 1 < 2 then
  print("1 is smaller then 2")
else
  print("1 is not smaller then 2")
end

Ok, no problem!

is'nt indentation easier to read>? Im confused have I misunderstood something basic :S

Who said it is harder?
He asked for him to format his code to make it more readable.

looks like an extra end in function Ernten()
turtle.digDown()
turtle.select(1)
turtle.placeDown()
end
end

ok i corrected

I changed the ends.
When i try to run the program, I get that message:
bios 328, [string "weizen"] : 25 "=" expected
probably not the only wrong thing.

not at my pc to test and couldnt work out the error msg :S, but try this: (I mainly restructures your length width loop so try understand why, its lot simpler now, and addedd an end in Tanken, and Auserfen for the if and loop.

function Tanken()
benzin = turtle.getFuelLevel()
if benzin < 5 then
  turtle.select(16)
  turtle.refuel(1)
  turtle.select(1)
end
end

function Ernten()
turtle.digDown()
turtle.select(1)
turtle.placeDown()
end
function Auswerfen()
slot= 2
while slot < 16 do
turtle.select(slot)
turtle.dropDown()
slot = slot+1
end
end
länge = 10+0
breite =  8+0
c = länge+1
while breite > 0 do
  while länge > 0 do
	Tanken()
	Ernten()
	länge = länge-1
	turtle.forward()
  end

  breite = breite-1
  länge = 10+0

  Tanken()
  turtle.turnLeft()
  turtle.forward()
  turtle.turnLeft()
  turtle.forward()
  
end

Tanken()
turtle.turnRight()
while c > 0 do
  Tanken()
  turte.forward()
  c = c-1
end
Tanken()
turtle.turnRight()
turtle.forward()
Auswerfen()
Tanken()
turtle.turnLeft()
turtle.turnLeft()
turtle.forward()
Tanken()
shell.run("reboot")