Displaying C/C++ file components in the C/C++ Projects view
File components are displayed in the C/C++ Projects view and in the Outline
view. You can display or hide all file components in the C/C++ Projects view.
To display file components
Click Window > Preferences.
In the Preferences dialog box, select C/C++ > Appearance from the list.
Select the Show translation unit members check box.
Click OK.
In the C/C++ Projects view, double-click a file component.
The component is highlighted in the C/C++ editor.