mauer

a = 0
write("Mauer in X:")
X = io.read()
write("Mauer in Y:")
Y = io.read()
c = a+X
d = a+Y
d1 = a+Y
while c > 0 do
  while d > 0 do
    turtle.place()
    turtle.up()
    d = (d - 1)
   end
   d = (d + d1)
   while not turtle.detectDown() do
   turtle.down()
  end
    turtle.turnRight()
    turtle.forward()
    turtle.turnLeft()
c = (c - 1)
end