Extension names to remember for begginers

Question

Extension names

Answer 1

c++: file.cpp
c: file.c
Java: file.java
c#: file.cs
xml: file.xml

Answer 2

extention names not to forget

indexhtml.html

indexjavasript.js

indexstyle/css.css

indexphp.php

indexpython.py

please add more to my list. 😃😃😃😃

Answer 3

knowledge based : Be interested in the extension names of the programming languages you are coding in.