Slicing Strings Using Variables In Batch

Question

So I want a program like this:

Enter number: 
5
Giving first 5 characters of string "apple pie"...
apple

I have tried something like this

set characters=5
set "string=apple pie"

set string=%string:~0, %characters%%

But it's not working, any idea why?

Community · Accepted Answer · 2017-05-23 12:02:40Z

2

either rewrite

set string=%string:~0, %characters%%

as

call set "string=%%string:~0, %characters%%%"

or use delayed expansion

@echo off
set characters=5
set "string=apple pie"

setlocal enabledelayedexpansion
set "string=!string:~0, %characters%!"
echo %string%

see Variables in batch not behaving as expected

edited May 23, 2017 at 12:02

CommunityBot

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answered May 10, 2017 at 9:46

elzooilogico

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2 Comments

user7873306 Over a year ago

Thank you! This worked very well, I did try use delayed expansion but I couldn't figure out the exclamation marks.

Aacini Over a year ago

IMHO the referred link does not talk about the use of !this:~0,%combination%!, but just about Delayed Expansion. See this answer instead that describe precisely this management, although the topic is different (arrays).

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