Why we are using ' using namespace std; in program?

Answer 1

@ cohen cout, endl are objects, why?

Answer 2

To put it short, it makes it so we don't have to put

std::

before every standard library object, such as cout, cin, or endl.

Answer 3

@sm sajjad

They just are. They're just objects of the standard library. They're certainly not functions due to the absence of parentheses.

Answer 4

Thank bro

Answer 5

namespace are very useful to solve a problem with same names of classes and functions. It's can be a big problem sometimes (especially in big projects).