Build

term.write("Wie lang soll die Fläche sein?")
local lol = read()
while turtle.getFuelLevel() < lol*7 do
 local q = turtle.getFuelLevel()
  if turtle.getFuelLevel() < lol*7 then
   term.write("Fuel Level is at "..q.." But needs to be "..lol*7)
   term.write("Please put Fuel in 1st slot")
   os.sleep(5)
   turtle.refuel()
  end
end

term.write("Wie breit soll die Fläche sein?")
local lob = read()
while turtle.getFuelLevel() < lob*7 do
 local q = turtle.getFuelLevel()
  if turtle.getFuelLevel() < lob*7 then
   term.write("Fuel Level is at "..q.." But needs to be "..lob*7)
   term.write("Please put Fuel in 1st slot")
   os.sleep(5)
   turtle.refuel()
  end
end
   term.write("Baue eine "..lol.." lange und "..lob.." breite Fläche")

local sslot = 1
turtle.select(sslot)
sslot = (sslot%16)+1
turtle.select(sslot)
turtle.getItemCount(sslot)

for b =1,lob/2 do

   for a = 1,lol do
      turtle.dig()
      turtle.digDown()
      turtle.placeDown()
      turtle.forward()
while turtle.getItemCount(sslot) < 1 do
  sslot = (sslot%16)+1
end
turtle.select(sslot)
     end

   for a = 1,1 do
      turtle.digDown()
      turtle.placeDown()
      turtle.turnRight()
      turtle.forward()
      turtle.turnRight()
     end

   for a = 1,lol do
      turtle.dig()
      turtle.digDown()
      turtle.placeDown()
      turtle.forward()
while turtle.getItemCount(sslot) < 1 do
  sslot = (sslot%16)+1
end
turtle.select(sslot)
     end

   for a = 1,1 do
      turtle.digDown()
      turtle.placeDown()
      turtle.turnLeft()
      turtle.forward()
      turtle.turnLeft()
     end

end
   for c = 1,16 do
    turtle.select(c)
   end
 turtle.select(1)