Batch, variable inside variable in a for loop

Question

How to set a variable inside a variable in a for loop? When I execute this code the var[] is empty. Someone can help me?

@echo off & setlocal enabledelayedexpansion

set var[0]=aaa
set var[1]=bbb
set var[2]=ccc
set var[3]=ddd
set var[4]=eee

for /L %%g in (1,1,3) do (
set /a num=!RANDOM! %% 5
echo position: !num!
echo keyword: !var[%num%]! :: THIS LINE NOT WORKING
)

pause

Give this a try: call echo keyword: %%var[!num!]%%

Squashman
– Squashman

2017-11-10 00:56:12 +00:00
Commented Nov 10, 2017 at 0:56 — Squashman
– Squashman, Commented Nov 10, 2017 at 0:56
Thanks Squashman. This works.

user3486019
– user3486019

2017-11-10 01:00:14 +00:00
Commented Nov 10, 2017 at 1:00 — user3486019
– user3486019, Commented Nov 10, 2017 at 1:00
This management is fully explained at this answer

Aacini
– Aacini

2017-11-10 20:16:14 +00:00
Commented Nov 10, 2017 at 20:16 — Aacini
– Aacini, Commented Nov 10, 2017 at 20:16

Squashman · Accepted Answer · 2017-11-10 01:08:32Z

2

You essentially have two options to get the double variable expansion you require. You can either use CALL or another FOR command.

call echo keyword: %%var[!num!]%%

or

FOR %%h in (!num!) do echo keyword: !var[%%h]!

answered Nov 10, 2017 at 1:08

Squashman

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