sugarcane

print("Please specify how long the field is")
local x = read()
print("is this a sugarcane farm or a melon/pumpkin farm")
print("1 = sugarcane")
print("2 = pumpkins/melons")
local y = read()
while x ~= 0 do
   for i =1, 16 do
      turtle.select(i)
      turtle.dropDown()
   end
   turtle.select(1)
   if turtle.getFuelLevel() <= 3*x
   then
      turtle.suckDown()
      turtle.refuel(32)
   end
   for i =1, 2 do
      for i =1, x+1 do
         turtle.forward()
         turtle.turnLeft()
         if turtle.detect() == true
         then
            turtle.dig()
         end
         turtle.turnRight()
      end
      turtle.turnLeft()
      for i =1,2*y+1 do
         turtle.forward()
      end
      turtle.turnLeft()
   end
end