Batch File input validation - Make sure user entered an integer

Question

I\'m experimenting with a Windows batch file to perform a simple operation which requires the user to enter a non-negative integer. I\'m using simple batch-file techniques t

Answer 1

Try this:

set /p numeric=enter a number

( 
  (if errorlevel %numeric% break ) 2>nul
)&&(
  echo %numeric% is numeric
)||(
  echo %numeric% is NOT numeric
)