I want to know the purpose of using the EEPROM because I can't get it,
I mean I know that it can store values for a long time, but I just can't get the goal here


[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/R6O5I.png



for example, im using EEPROM to see the difference if I print a value inside variable s to the serial moniter using EEPROM and a normal value inside the variable f.
but I couldn't find the difference between both because when unplugging the power and turn it on again, both of them are printed.
hope you got the idea and I hope to see some feedback.
thank you..