User profile: insane xd

User info
User name:insane xd
Name:Abhishek
Statistical data
Birthdate:Sep 19, 1999
Gender:Male
Occupation:Student
Skills:C
C++
Python
History
Joined:
Number of posts:1
Latest posts:

namespaces
I want to know if there are more namespaces like std and it'll be pretty helpful if you could share ...