What's wrong in this program??

Question

https://code.sololearn.com/c7F5jHydECMA/?ref=app

Answer 1

here is an example.

- you do not have values to use the "-" operator

- you tried overloading one object with it-self

https://code.sololearn.com/cx3kuuMj70tl/?ref=app

Answer 2

Here is a copy from following a tutorial from

https://www.cprogramming.com/tutorial/operator_overloading.html

https://code.sololearn.com/cKAxeij8j24t/?ref=app