What is namespace?

Question

i see 'namespace' every single program. what is that plzz explain.

Answer 1

namespace is the keyword of c++
use to include directives.
(such as to include standard class libraries of ANSI C++ we write "using namespace std")

Answer 2

It is used to avoid writing std:: before every function from iostream. It shows you that you are using std class function. std means standard

Answer 3

thanks....