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

SET /A

Basic Integer Arithmetic.

Description: The SET /A command can be used for basic arithmetic.
You can write SET /a y=3*x or SET /a y=3*%x%. Both are correct. The command interpreter is smart enough to recognize variables within a formula.

Script:

1. 2. 3. 4. 5. set /a x=20 set /a y=3*x set /a y+=140 set /a y/=2 echo.y = %y%

Script Output:

Script Output

y = 100