Rotate stepper and stop

I need some help to use a stepper. I have all the code to rotate the stepper in bot directions. (I use downloaded Stepper sketches)
I have an input source whereby I type in say for example +10. I will need the stepper to rotate clockwise for 10 steps, then rotate 10 steps anti-clockwise and stop. If I type in -200, the stepper must rotate anti clockwise for 200 steps, then rotate 200 steps clockwise and stop
All help will be appreciated.

What specific part are you having issues with?

Thank you for your response.
Someone just told me to use an encoder as the input. That works great.
Here is the link I saw:

Thank you once again