How to increment variable under DOS?

Question

I\'ve spent the past 3hrs trying to work this out but just couldn\'t find a solution. Here\'s my batch script:

if NOT Exist Counter.txt GOTO START
Type c:\\count         


        

Answer 1

None of these seemed to work for me:

@ECHO OFF

REM 1. Initialize our counter
SET /A "c=0"

REM Iterate through a dummy list. 
REM Notice how the counter is used: "CALL ECHO %%c%%" 
FOR /L %%i in (10,1,20) DO (

  REM 2. Increment counter
  SET /A "c+=1"

  REM 3. Print our counter "%c%" and some dummy data "%%i"
  CALL ECHO Line %%c%%: - Data: %%i
)

The answer was extracted from: https://www.tutorialspoint.com/batch_script/batch_script_arrays.htm (Section: Length of an Array)

Result:

Line 1: - Data: 10
Line 2: - Data: 11
Line 3: - Data: 12
Line 4: - Data: 13
Line 5: - Data: 14
Line 6: - Data: 15
Line 7: - Data: 16
Line 8: - Data: 17
Line 9: - Data: 18
Line 10: - Data: 19
Line 11: - Data: 20