windows 7 - Math on batch (win)

Question

I am developing a CMD batch. I want to do some math in it. This formula: (x+1)100:y

So in batch, x = %x%, and y = %y%. I know how to set the variables. Now, how can batch calculate this? (WINDOWS CMD)

Do I need something extra?

(I need this to be available to users of Windows XP to 7.)

Answer 1

The set command supports some limited calculation. In your case, you want: set /a result=(100*x)/y

Run set /? to see full documentation on what is supported. The /a switch does automatic variable substitution, so you can use x instead of %x%.