for Windows10,Windows8,Windows7,VISTA,
XP,NT,Server 2000,Server 2003,Server 2008

Returning Values the Classic Way

The classic way of returning values and the limitations.

Description: The CALL command doesn`t support return values as known by other programming languages.
The classic walkaround is to have the function store the return value into a environment variable. The calling script can use this variable when the function returns. The :myGetFunc function below demonstrates how the variable var1 gets the "DosTips" string assigned which can then be used in the calling function.

Note: The var1 variable is reserved for this particular function. Any data stored in var1 by the calling function before calling :myGetVar will be overwritten.

Usage:

1. 2. 3. 4. set "var1=some hopefully not important string" echo.var1 before: %var1% call:myGetFunc echo.var1 after : %var1%

Script:

1. 2. 3. :myGetFunc - get a value set "var1=DosTips" goto:eof

Script Output:

Script Output

var1 before: some hopefully not important string
var1 after : DosTips