# Commenting out code

You can comment out one or more lines of code in any C/C++ editor view. The leading characters `//` are added to the beginning of each line when commenting one or more lines of code. You can also block comment multiple lines of code using the characters `/* */`.

Tip: The characters `/* */` on lines that already are already commented out are not affected when you comment and uncomment code as described above.

To toggle `//` comments on code:

1. In the C/C++ editor, select the line(s) of code that you want to comment out. If no lines are selected comments will be added (or removed) at the current cursor position.
2. Right-click and select Source > Toggle Comment. (`CTRL+/`)

To block comment `/* */` code:

1. In the C/C++ editor, select multiple line(s) of code to comment out.
2. To comment out multiple code lines right-click and select Source > Add Block Comment. (`CTRL+SHIFT+/`)
3. To uncomment multiple code lines right-click and select Source > Remove Block Comment. (`CTRL+SHIFT+\`)

Code entry

Customizing the C/C++ editor
Working with Content Assist

C/C++ editor preferences