Why I get a different number than the variable?

[luis713]

I have this simple code but I noticed I get a different number than the value declared before, I even tried using constant values using "const", the first value works fine, but the var2 changes to other value, it works fine if I write the numbers using quotation marks

$var1 = 353039373439333231
$var2 = 31373534333631303739

MsgBox(0, "", $Var1)
MsgBox(0, "", $Var2)

 

Edited July 28, 2019 by luis713

[Papak]

Simply put, second number is too big. On a 64 bit system, the highest 64-bit signed integer you can store is 2⁶³ − 1 which equals to
9,223,372,036,854,775,807.

So a small comparison:
 

9,223,372,036,854,775,807

31,373,534,333,631,303,739

Your number is 3.5 times larger. Trying to store that big of a number would usually cause buffer overflow in some programming languages, but AutoIt caps it at its maximum value, which is 2⁶³ − 1 = 9,223,372,036,854,775,807. So that's why you're getting that specific number instead of 31,373,534,333,631,303,739.

 

Consider storing it as a string if you don't have to do math operations with it. Otherwise read about handling big numbers.

[water]

Or have a look at the BigNum UDF:

 

[luis713]

thanks both @Papak @water