CODEWITHSUNDEEP
batch-file
Josh
Josh

Reputation: 115

Insert random interger variable into array index in batch

I'm trying to select 1 of 10 random strings from a predetermined array using the code bellow. When %Answer% is echo it prints "randomNumber".

Any ideas where I'm going wrong.

echo off
setlocal enabledelayedexpansion

set /a randomNumber=%RANDOM% %%10
set Answer=!foo[(%randomNumber%)]!
echo %Answer%
pause

EDIT: here is how I create the array (context: I'm trying to code a Magic 8 Ball)

set a/ foo[0]=Majic8BallDon'tKnow.Majic8BallSaysAskAgain..
set a/ foo[1]=You are not worthy of an answer..
set a/ foo[2]=You wouldn't understand if I told you..

and so on to foo[9]

Upvotes: 1

Views: 109

Answers (1)

Squashman
Squashman

Reputation: 14290

You have two choices.

Use delayed expansion.

setlocal enabledelayedexpansion
set /a randomNumber=%RANDOM% %%10
set Answer=!foo[(%randomNumber%)]!
echo %Answer%
pause

Or use the call command

set /a randomNumber=%RANDOM% %%10
call set Answer=%%foo[(%randomNumber%)]%%
echo %Answer%
pause

I don't know how you are creating your array, so this answer may need some tweaking.

Upvotes: 2

Related Questions