Variable has no value

[asdfasdf123]

What is it you are trying to achieve?
I'm working on a slot machine that adds $500 to the payout when there are 3 of the same symbol in a row.


What is the problem you are having?
It works most of the time, but every now and then, the program stops and it says that a variable "has no value".


Describe what you have tried to solve this problem
I added an "else" to the "if" statement that I used to give out the $500, but it didn't work.


Post any relevant code (You may choose to attach the file instead of posting the code if it is too long)
middle2, right2, and left2 are the values of the randomly generated numbers used to display the symbols on each reel, multi is the amount of money the user placed in the slot machine x2, and prize should be self-explanatory.

Turing:

if middle2 = right2 and left2 = middle2 then                     prize := Rand.Int (0, multi) + 500                     put "Congratulations! You win an extra $500!"                 else                     prize := Rand.Int (0, multi)                 end if

Please specify what version of Turing you are using
4.1 1.0.1

[Insectoid]

'Variable has no value' means you're trying to check the value of a variable that hasn't been assigned.

code:

int a; if a = 1 then     put "This will crash immediately." end if

Look through your code. Every time you compare a variable, check to make sure you've actually assigned a value to it.

[asdfasdf123]

They're all random integers.

[Insectoid]

Are you sure? Could it be a different variable entirely that's causing the problem? It's impossible for me to tell without seeing more of your code.

[asdfasdf123]

I haven't seen it since I edited the code, but here's the program (it's 1SlotMachine.t, but it takes the entire folder to run and you have to run it from 1MainMenu.t):

[Insectoid]

You've got way too many files for me to bother going through it all, but I played with it for a while and was unable to reproduce the bug.

[asdfasdf123]

Insectoid @ Fri Dec 19, 2014 1:48 pm wrote:

You've got way too many files for me to bother going through it all

Only 2 of the files do anything besides display images, so it doesn't matter if you didn't go through them.