how concatenate two variables in batch script

Question

I want to do something like this in batch script  Please let me know if this is the proper or possible way to do it or any other way   set var1 A  set var2 B  set AB hi  set newvar  var1  var2   echo  newvar      This should produce the value  hi

User · Answer

The way is correct  but can be improved a bit with the extended set-syntax     set  var xyz    Sets the var to the content until the last quotation mark  this ensures that no  hidden  spaces are appended   Your code would look like  set  var1 A  set  var2 B  set  AB hi  set  newvar  var1  var2   echo  newvar  is the concat of var1 and var2 echo   newvar   is the indirect content of newvar

User · Answer

Enabling delayed variable expansion solves you problem  the script produces  hi    setlocal EnableDelayedExpansion  set var1 A set var2 B  set AB hi  set newvar   var1  var2    echo  newvar

User · Answer

You can do it without setlocal  because of the setlocal command the variable won t  survive an endlocal because it was created in setlocal  In this way the variable will be defined the right way   To do that use this code   set var1 A  set var2 B  set AB hi  call set newvar    var1  var2     echo  newvar     Note  You MUST use call before you set the variable or it won t work

[batch-file] how concatenate two variables in batch script?

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