Using the minus sign as a variable [illegal character] Topic is solved

[ahk_lover]

To my understanding, the variable names are not allowed to have a minus sign in it if its used as an expression. I have a slight problem, this is the code:

Code: Select all

s::
InputBox, grade, Enter the Grade Earned, 
If (%grade% = A-)
MsgBox, THIS WAS AN A-
else
MsgBox, Not an A-

So if I enter in a grade such as A-, it will throw an error and crash the script. How do I use minus signs so it would say "Not an A"?

In this script, it uses %%s for the variable to see its value. Please correct me if I am wrong.

[gregster]

In expression mode you don't need %s to use variables, on the other hand A- is a hard-coded literal string in this case, not a variable. Therefore, you have to use quote signs:

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If (grade = "A-")

Compare https://autohotkey.com/docs/commands/IfExpression.htm and Variables.htm#Expressions:

Variable names in an expression are not enclosed in percent signs (except for pseudo-arrays and other double references). Consequently, literal strings must be enclosed in double quotes to distinguish them from variables.

[Rohwedder]

Hallo,
or traditional:

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If grade = A-