You should not put return 0, as it can be confused with examples like (18-18) or (18*0) or maybe when puyying (18/0) it is not logical that i'll get 0!.

Just simple if else statements does the trick

Good)

we are asked only those four operators, not "exponentiation"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Same here

в некоторых случаях eval может навредить, поэтому достаточно хорошая альтернатива бро

You would just test adding multiple sets of numbers to confirm that it's working.

activates default, right?

Same :D

What will you do if the exponentiation operator is passed?

easy