eclipse open declaration not working properly
check if in Paths and Symbols (also in C/C++ General) your Project is added in Includes. If not: Go to Add... Button then Workspace... then select your workspace. It will be included as Is a workspace path. Maybe this will fix the problem.
That might be because your C/C++ project makes reference to resources from other projects.
- On the top menu bar, go to Project -> Properties
- A properties window will appear. On the left side menu, go to Project References.
- On the box to the right, verify if other projects are listed and check the ones that might be related to yours.
- Press Apply and Close button.
- Try on your shortcuts again.