[Foreigner]

Код:

@echo off
setlocal enabledelayedexpansion

set "dir1=c:\work\work\work"
set "char1=1"
set "vivod=!dir%char1%!"
echo %vivod%

Или так:

Код:

@echo off
setlocal

set "dir1=c:\work\work\work"
set "char1=1"
set "vivod=%%dir%char1%%%"
call echo %vivod%