In eclipse, you cannot press Ctrl or F3 to switch to scalability mode when editing large files.

Eclipse edits more than 5000 lines for the first time (default)CodeWhen the above files are displayed, the system prompts that the scalabilitys mode has been enabled to improve the performance. The Code definition jump function will be disabled to improve the performance, after editing the large code, you cannot find a place to restore it.

The solution is simple. Go to Windows> C/C ++> editor> scalabilitys and enable scalability mode on the right when thr number of lines in the file is more:

Enter "20000" or "50000" in the column and adjust it according to your code.