Easily comment (C++) code in vim

Question

I have looked at the following question:

How to comment out a block of Python code in Vim

But that does not seem to work for me. How do I comment code easily wit

Answer 1

You can add this to your .vimrc file

map  :s/^/\/\//

Then when you need to comment a section just select all lines (Shift-V + movement) and then press CtrlC.

To un-comment you can define in a similar way

map  :s/^\/\///

that removes a // at begin of line from the selected range when pressing CtrlU.