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I have a loop in a batch script and I would like to do some arithmetics with the loop counter. I found out how to evaluate expressions, how to add numbers here: Evaluating expressions in windows batch script

How do I do the same but with variables?

For example:

set x = 100 for /L %%i in (1,1,5) do ( set Result=0 set /a Result = %%i+%%x echo %Result% )

As output I would expect

101 102 103 104 105

Thanks!

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2 Answers 2

Reset to default
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You really should move away from Batch files.

@echo off setlocal enabledelayedexpansion set x=100 set result=0 for /L %%i in (1,1,5) do ( set /A result=!x! + %%i echo !result! ) endlocal
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  • 3
    Yeah. Powershell == good. Commented Aug 28, 2009 at 17:14
  • But batch files == challenge. And challenges are fun :) Commented Jan 5, 2010 at 23:00
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You are resetting Result to zero at each step. Move that before the loop. Also, try help set at the cmd prompt for more information on all this. Especially look at the section on delayed environment variable expansion.

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  • Although yes, it was a glaring error on his part, the problem still can't be solved without using delayed expansion Commented Aug 28, 2009 at 17:59
  • That's why I included the sentence that begins "Especially...". Commented Aug 28, 2009 at 18:28

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