Windows Command FOR LOOP - how to use previous value of counter?

Question

using Windows Command, I would like to use the previous counter value to specify a file within a command. Something like:

FOR /L %G in (1,1,3) do (echo %G & echo (%G-1)

Expected result:

1 0
2 1
3 2

Is this possible somehow?

Thanks a lot!

Answer 1

Yea, for your purpose, you can run the command:

$for /L %i in (1,1,3) do @echo off | set /P=%i & set /a myvar=-1+%i & echo.

The output is:

1 0
2 1
3 2