Answer 1

In c++ we use // for single line comment and /* */ for multiple line comments...
It is basically the syntax of c++..
We cannot use # because it is used to include the header file.. And work as preprocessor directive..
While in python we use # for comments.. Because there we use import keyeord

Answer 2

Its doesn't work in C++.
in C++ we use these 👉 // single line comment

/* Multiple line comment */

Answer 3

Because "#" in C is for include a file

Answer 4

Work in python

Answer 5

Because. It is made like that...
We need to use // for single comment and /**/ for multiple

Answer 6

This is Ruby !
# - comment for the Ruby.