在 for 循环中调用变量 - BATCH

Question

I would like to know if it's possible or other ways to get this:

 @echo off
 setlocal enableDelayedExpansion
 SET loopcount=3

 SET variable1=test1
 SET variable2=test2
 SET variable3=test3

 for /l %%x in (1, 1, %loopcount%) do {
      echo %variable%%x%
 }

As you can see in echo, I want to get the value of variable1 which is test1 and so on... Is there any workaround on this? Thank you.

Answer 1

The best way to perform your task, is to use delayed expansion.

In your example you already enabled it, but didn't use it. A delayed variable is enclosed within ! characters, as opposed to % characters.

Example:

@Echo Off
SetLocal EnableExtensions EnableDelayedExpansion
Set "loopcount=3"

Set "variable1=test1"
Set "variable2=test2"
Set "variable3=test3"

For /L %%G In (1,1,%loopcount%) Do (
    Echo(!variable%%G!
)

However, you should wherever possible, you should only enable delayed expansion, when needed:

@Echo Off
SetLocal EnableExtensions DisableDelayedExpansion
Set "loopcount=3"

Set "variable1=test1"
Set "variable2=test2"
Set "variable3=test3"

For /L %%G In (1,1,%loopcount%) Do (
    SetLocal EnableDelayedExpansion
    Echo(!variable%%G!
    EndLocal
)