Netbeans 7.2 shows "Unable to resolve identifier" , although build is successful

I'm using the Netbeans IDE 7.2 with C/C++ plugin (last version 1.18.1.1) and if I build my project everything is fine but the IDE show me errors (e.g. unable to resolve identifier ...)

Anyone else have this bug and how can I solve it?

Solution 1:

Here's an excerpt from my answer to another question.

Unresolved Identifier

If the source of the .cpp file looks like this

Click with the right mouse button on your project.
Check C/C++ Code As...
Run Reparse Project.

If that is not enough.
Go to Project Properties
Fill in the Include input field as described.

Set the include path correct.

I hope that can help you.

Solution 2:

i had the same problem, but i recognized it appears after i changed properties-> c++ compiler -> Compilation Line -> additional options to -std=c++11. if change the settings to default the error "unable to resolve identifier" disapears.

Solution 3:

TL;DR

UTF-8 WITH BOM can cause problems too.

PROBLEM

I just had the same problem, and I tried lots of possible solutions, but none of them worked, until I found out the source of the problem, which was a bit funny. I know this question has already been answered, but I write down my solution, maybe it will solve the problem of someone else suffering from the same problem.

For example, I got "Unable to resolve identifier Vector" when defining struct Vector, while it was correct:

I got many errors similar to this when declaring/defining functions, etc. Additionally, my code assistance didn't work because of the amount of errors.

SOLUTION

1. I opened the .cpp file in Notepad++, and saw the file was encoded in regular UTF-8, which means that the file begins with the byte order mark (BOM) character:

   

2. So I clicked Encoding → Convert to UTF-8 without BOM:

   

   Note: do NOT just switch to "Encode in UTF-8 without BOM", because it can mess up some special characters (e.g. characters containing accents, etc.). So convert it.

3. Save

4. Problem gone: no errors reported in NetBeans anymore:

   

   I hope it saves some time for someone else too.