Placing | ComputerCraft

write("how many times?")
local Number = tonumber(read())
if Number == 0 then
    write("Ok!\n")
    exit()
end
local i = 0
repeat
    if turtle.detect() then
        write("I can't do it!\n")
        os.sleep(1)
    else
        turtle.place()
        write("Placed ".. tostring(i)+1 .." times\n")
        i = i + 1
    end
until i == Number