What is using namespace std;

Question

I know it stand for stamdard namespace but what does it do...im a newbie first timer and there are alot of comments saying it is used instead of cout::std or smth like that...if that is true...i domt know what that even does so please explain
https://code.sololearn.com/c1gK798f7ibI/?ref=app

Answer 1

Thaaaanks...u r a lifesaver

Answer 2

Please remember to use the search bar before posting a question. The following threads might be able to help you:

What is a namespace:
https://www.sololearn.com/discuss/392399/?ref=app
https://www.sololearn.com/discuss/1694246/?ref=app

Use of namespace std:
https://www.sololearn.com/discuss/333555/?ref=app
https://www.sololearn.com/discuss/1762818/?ref=app

Why to avoid namespace std:
https://www.sololearn.com/discuss/1821432/?ref=app
https://www.sololearn.com/discuss/1518433/?ref=app