Pre- & Post Increment in C#

Question

I am a little confused about how the C# compiler handles pre- and post increments and decrements.

When I code the following:

int x = 4;
x = x++ + ++x         


        

Answer 1

From your comment:

I thought that post- and pre-increments are executed after / before evaluation of the complete codeline - but they are executed after / before the evaluation of each item in the expression.

Your misunderstanding is an extremely common one. Note that in some languages, like C, it is not specified when the side effect becomes visible and it is therefore legal, but not required, for your statement to be true in C.

This is not the case in C#; in C# side effects of code on the left side of an expression are always observed to happen before code on the right side executes (from a single thread; in multithreaded scenarios all bets are off.)

For a more detailed explanation of what the increment operators do in C#, see:

What is the difference between i++ and ++i?

There are a great many additional links there to articles I've written on this often-misunderstood topic.