"++" vs "+=" on function parameter

[user1234]

On Sunday, 8 March 2026 at 03:30:55 UTC, claptrap wrote:
> [...]
> Just seems like p++ should behave like p+=N for parameters, I 
> mean if you had never seen that syntax before you would 
> probably assume similar behaviour.

1. This would break code
2. that would be inconsistent with the C version
3. that would be globally inconsistent with the definition, that 
can be reduced to "return the value of the sub-expression before 
the side-effect".