CC circle turtle

turtle.select(1)
h=fs.open("x","r")
x=tonumber(h.readLine())
h.close()
mem=x
while true do
x=mem+1
mem=x
while x>=0 do
if turtle.getItemCount(1)==0 then
turtle.select(2)
turtle.placeUp()
turtle.select(1)
turtle.suckUp(64)
turtle.select()
turtle.digUp()
turtle.select(1)
end
turtle.placeDown()
turtle.forward()
x=x-1
h=fs.open("x","w")
h.writeLine(x-1)
h.close()
end
turtle.turnLeft()
end