if input ~= multiple inputs help

I have this great Text Guide System Comming along for my practices with ComputerCraft.
I need to know how to get this to work with multiple words for input.

if input ~= "Command 1" or "Command 2" or "Command 3" then


Something like that how do i correctly put that in?

I might post my code when I am finished.
:)/>/>

Basically, you want the same sequence of events to happen to several different inputs…
Lemme know when you get an answer, I wanna know to….

It's simple. You have the basic structure right, just the syntax a little muddled.

if input ~= "command 1" or input ~= "command 2" or input ~= "command 3" then
--you need to use the equations each time.
--if you are wanting it to be neither of these, switch the "or" to "and"

Do we need the "~=" or the ==?

Depends whether you want your condition to succeed when the values are true (==) or false(~=)

Thanx I have no clue when it comes to these things.

The operator is defined like this:
~= does not equate to
== equates to

Pretty simple, one just means if it the result is anything EXCEPT this, and the other is if the result is EXACTLY this.

actually you want "and"s in there, not "or"s. it'l'l always be not-equal to one of the three, so that version will run always.

I keep getting the bios:206: [string "fprompt"]:14: unexpected symbol… here is the code I have made so far.

term.clear()
term.setCursorPos(1,1)
print("COM API 1.0")
print("Available Commands")
print("Current List Unavailable")
write("Command:  ")
input = read()
if input == "filter" then
shell.run "Filter_Prompt"
end
if input ~= "filter" or if input ~= "lights" or if input ~= "cancel" then
term.clear()
term.setCursorPos(1,1)
print ("Command Not Available")
end

GopherAtl, on 21 September 2012 - 02:07 AM said:

actually you want "and"s in there, not "or"s. it'l'l always be not-equal to one of the three, so that version will run always.

read my post above. I used the quote to message you.

The error is caused by the 'if's in the line.
It should read:

if input ~= "filter" or input ~= "lights" or input ~= "cancel" then

But, as GopherAtl said, it's always going to be not equal to at least one of those conditions, making the end result true.

Or is true if ANY of the conditions are true.
And is true if ALL of the conditions are true.

In your case, it's better to just do

term.clear()
term.setCursorPos(1,1)
print("COM API 1.0")
print("Available Commands")
print("Current List Unavailable")
write("Command:  ")
input = read()
if input == "filter" then
  shell.run "Filter_Prompt"
elseif input == "lights"
  -- handle lights here
elseif input == "cancel" then
  -- handle cancel here
else -- anything we're not expecting
  term.clear()
  term.setCursorPos(1,1)
  print ("Command Not Available")
end

Good all of my issues have been sorted out. I am getting the little system kinks worked and touchups.
thank you for all the help. :P/>/>

Yes this is just the information I needed. Thanks so much! :D/>