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Unsure About Errors

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Here are the errors:


13: Print( "Battery is "$voltageAA )
> Error on line 13: Missing binary operator: 
"Battery is " [?] 67

15: Filewriteline( "C:\Users\dylan_000\Desktop\AAlog.txt", $number + 1 ":" $voltageAA)
> Error on line 15: Missing binary operator: 
1 [?] ":"
":" [?] 69
Done (00:00:03.7516495)

Here's the script:


:start
$voltageAA = 0
print( "Load battery" )
Sleep(2000)

#Claw closed
servo(d0, 95)
servo(d1, 121)
Sleep(500)

#check and log voltage
$voltageAA = getadc(7)
Print( "Battery is "$voltageAA )
Sleep(300)
Filewriteline( "C:\Users\dylan_000\Desktop\AAlog.txt", $number + 1 ":" $voltageAA)

#claw open
servo(d0, 50)
servo(d1, 150)
Sleep(200)

#door open
servo(d2, 95)
sleep(500)

#door closed
servo(d2, 175)

Goto(start)

What do I have to do to fix them? I'm sure its just my script.


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#1  

Because you're not appending the variable to the string...

This is wrong:


Print( "Battery is "$voltageAA )

This is correct:


Print( "Battery is "  + $voltageAA )

Without it, you would have to begin understanding binary operations - which you don't, hence the question about the error:)

#2  

But what about the second one. It outputs

 
$number + 1 : $voltageAA

to the file. How do I fix that?

It should output


2: 127

or similar.

#3  

It's the same problem. You left out the + operators again:


Filewriteline( "C:\Users\dylan_000\Desktop\AAlog.txt", $number+1 ":" $voltageAA)
           # Should be:
Filewriteline( "C:\Users\dylan_000\Desktop\AAlog.txt", $number+1 + ": " + $voltageAA)

There has to be a plus sign between each and every separate thing you are trying to combine into one sentence. In this case the + operator is being used in two different ways depending on context. The first one ($number+1), is used as a math addition operator. In the other cases it is being used as an append operator (as DJ mentioned above).

#4  

Alright, so spaces vs no spaces. Got it. Will test it tomorrow.

#5  

Umm, no. It's not about the spaces. It's about the adding of the plus signs:


Filewriteline( "C:\Users\dylan_000\Desktop\AAlog.txt", $number+1 + ": " + $voltageAA)
#                                                                |      |
#                                                     Added Plus sign operators

I added a space with the colon so as to separate the colon from the $voltageAA value in the output, but that has nothing to do with why it didn't work. For instance:


Filewriteline( "C:\Users\dylan_000\Desktop\AAlog.txt", $number + 1 + ": " + $voltageAA)

      #  Will work the same as:

Filewriteline( "C:\Users\dylan_000\Desktop\AAlog.txt", $number+1+": "+$voltageAA)

The spaces between the parts make no difference.

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