How to change the name of an environment variable with a different variable?

Question

Is there a method to name an environment variable dynamically using another environment variable in a batch file?

Something like

numplayers=3
char%numplayer%atk=12 
echo char3atk

with output

Related: [Arrays, linked lists and other data structures in cmd.exe (batch) script](https://stackoverflow.com/a/10167990) — aschipfl, Apr 23 '18 at 15:35

score 4 · Answer 1 · answered Apr 23 '18 at 15:53

Given that you are unlikely to know beforehand the number assigned to %numplayers%, here are a few ways you can see the value of the variable:

Set "numplayers=3"
Set "char%numplayers%atk=12"
Call Echo %%char%numplayers%atk%%

Set "numplayers=3"
Set "char%numplayers%atk=12"
Set char%numplayers%atk

SetLocal EnableDelayedExpansion
Set "numplayers=3"
Set "char%numplayers%atk=12"
Echo !char%numplayers%atk!

score 1 · Accepted Answer · answered Apr 23 '18 at 15:24

1

It's quite straightforward:

SET numplayers=3
SET char%numplayers%atk=12
ECHO %char3atk%

answered Apr 23 '18 at 15:24

uri2x

thank you I just realized i had a space in between the %% thank you for the help. – Ian Hazleton Apr 23 '18 at 15:28

2 Answers2