#Does not equal sign lua code#

So in the case of our very simple 'AI'-type program, we might want something like the following. Easy method is just make: If codevalue ABCD then xyz Elseif codevalue 1234 then 123 Else something end if ( x ABCD and x EFGH ) is the same as if not (x ABCD or x EFGH) You have to consider the or-argument isnt what you read out in plain English.

#Does not equal sign lua code#

The code we want to execute in the else condition simply goes between the else and end keywords. Of course we don't need to specify a condition, because by definition we don't require one - this section will execute only if none of the other conditions in the chain are met. Much like elseif, we can replace end with else and then push the end to the end of our chain. On running the script, you can see that it reacts differently depending on what the user inputs - it works! So we have a chain of if and else-ifs, but how do we specify what it should do if none of the conditions are met? Surely there is a way to add this functionality into our 'daisy chain'. Io.write ( ' Enter a message: ' ) userinput = io.read () if userinput = ' Hi' then print ( ' Well howdy there!' ) elseif userinput = ' Bye' then print ( ' Goodbye!' ) elseif userinput = ' Hello' then print ( ' Hi!' ) elseif userinput = ' Hu' then print ( ' Spelling error much?' ) end Remember that string constants are defined by double quotes, so getting the user input using io.read and checking if it's equal to 'Hi' might look something like this: This means that any conditions that are comparing input received from the user, must compare it to another string. It's worth noting that user input is taken by io.read as a string data type, as can be tested using the type function. So let's say we wanted to take the user's input, and check if they typed 'Hi' to us. This functionality becomes much more useful, however, when we use them with varying values such as when we are handling user input. We're setting a variable to a constant value and then checking if it equals another constant value. In the case of the above code snippet though, it's obviously pretty useless. In the ordinary understanding of that statement, 'x' is the subject, 'is not equal to' is the predicate or verb phrase, and 'zero or one' is the object, a set of possibilities joined by a conjunction. Try replacing the conditional operators we will use in code snippets below with some of the ones shown above, and just see what happens! You'll gain a lot of knowledge and experience from just playing around with code. When you read x (0 or 1) or x 0 or 1 it's natural to parse this as you would the sentence 'x is not equal to zero or one'. These are all pretty self-explanatory and are simply shoved between two values, just as we did in the example code snippet above. There are actually a whole bunch of conditional operators which specify different relationships between the two values: Number = 3 if number = 5 then -Code to execute if true end