When compile errors occur, the projects, files, and lines
in error are all marked as such. You can also use the Problems view
to jump to the line in error in the editor.
Procedure
If any errors occur when building a project, you will see
markers showing the errors in the following places:
The Problems view shows all errors for all resources.
Double-clicking
on error in the Problems view will open the file in the editor to
the line in error.
The projects and files that had errors will be marked in error
in the Project Explorer view.
In the left margin of the editor any lines in error will be
marked.