Do comments use disk space?

Question

If I have thousands of lines of code, heavily commented, will the comments effect the program size

Answer 1

Commented out lines of the code doesn't affect on the exe file size because all comments are discarded at the compilation stage, but since the source code is a plain text file, adding characters (whether comments or executable codes) to the file will increase the size of the source code file stored on the disk.

Answer 2

noo

Answer 3

since system has to remember the commented sentence hence acquire some memory in the disk.

Answer 4

yes