4 replies to this topic

[Cing]

hi everyone

I have started writing a program for a turtle and had a problem
with the text that I wrote in and if then.
I mad a test program of it.

Pastebin: dFUegsb7

If I typed in 1 the out was:

1
wrong
oke

I have no idea whtat i did wrong could anyone please help?

[MKlegoman357]

The function 'read' returns a string, not a number. You can use the function 'tonumber' to convert a string to a number:

local input = tonumber( read() )

if input then --# if the user entered a number
  print("You entered the number: ", input)
else
  print("You didn't enter a valid number")
end

[Cing]

whoo thanks a lot

But does if then not work with strings?

[Bomb Bloke]

tonumber() returns nil if it can't convert its parameter to a numeral, so tonumber(read()) will indeed return nil if anything but a number is typed.

[Cing]

Thanks again

And here is the finalized code: http://www.computerc...545#entry211545
and pastbin: http://pastebin.com/AfFDnjki